“生物累积”和“生物放大”有何区别？为什么顶级捕食者风险最高？
How do bioaccumulation and biomagnification differ, and why do top predators face the highest risk?
生物累积指单个生物体内污染物的吸收量大于排出量，导致浓度随年龄增长，例如鱼体内的汞。生物放大则指污染物沿食物链逐级浓缩，每上升一个营养级，浓度可能增加数倍。两者叠加后，鲨鱼、猛禽、鲸类等顶级捕食者体内的浓度可比环境高出百万倍。即使水中浓度极低，也足以造成生殖和神经损害，这正是全球禁用DDT、限制汞排放的重要原因。
Bioaccumulation is the buildup within a single organism when uptake exceeds elimination, so concentrations rise with age — as with mercury in fish. Biomagnification is the progressive concentration along the food chain: each trophic step can multiply concentrations several-fold. Combined, they mean top predators such as sharks, raptors, and whales carry concentrations millions of times higher than ambient levels. Even trace water concentrations can then cause reproductive and neurological damage — a key reason DDT was banned and mercury restricted.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#生物放大 #生物累积 #食物链
芬兰的翁卡洛深地质处置库如何保证十万年尺度的核废料安全？
How does Finland's Onkalo repository aim to keep nuclear waste safe over a hundred thousand years?
翁卡洛采用多重屏障理念：乏燃料先密封进铸铁内衬的铜罐，外面包裹膨润土缓冲层，再置于四百多米深的稳定结晶岩隧道中，最后用膨润土和混凝土回填封堵。铜抗腐蚀、膨润土遇水膨胀可阻滞地下水与核素迁移，围岩则提供地质隔离与低水力梯度。选址还需论证未来冰期、地震与人类误入等长期情景，安全评估时间尺度达十万年，该库是全球首个进入运行准备阶段的高放废物处置库。
Onkalo relies on multiple engineered barriers: spent fuel is sealed in copper canisters with cast-iron inserts, surrounded by a bentonite clay buffer, emplaced in tunnels more than four hundred metres down in stable crystalline bedrock, and finally backfilled and plugged. Copper resists corrosion, bentonite swells on contact with water to retard groundwater flow and radionuclide migration, and the host rock provides geological isolation with low hydraulic gradients. Siting also had to address future glaciations, earthquakes, and inadvertent human intrusion over a hundred-thousand-year safety case, making it the first deep repository for high-level waste to reach operational readiness.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#深地质处置 #多重屏障 #核废料
食品包装中的PFAS永久化学品问题是什么？
What is the PFAS forever-chemical problem in food packaging?
PFAS是一类极难降解、可防水防油的含氟化合物，常用于防油纸和快餐包装。它们会从包装迁移到食物并在人体和环境中长期累积，与多种健康风险相关。由于持久性和流动性，处理和替代都十分困难。
PFAS are fluorinated compounds that resist degradation and repel water and oil, used in grease-proof paper and fast-food packaging. They migrate into food and accumulate long-term in people and the environment, linked to several health risks. Their persistence and mobility make treatment and substitution very hard.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《Science》全氟化合物综述
Science PFAS review
#PFAS #食品包装 #持久污染物
氮沉降对森林生态系统有什么影响？
How does nitrogen deposition affect forest ecosystems?
化石燃料燃烧和施肥使大气活性氮增加，过量沉降会打破森林的养分平衡，促进少数速生植物而抑制藓类和真菌。长期高氮沉降可造成土壤酸化、生物多样性下降并释放氧化亚氮等温室气体。临界负荷概念用于评估生态系统的承受阈值。
Fossil-fuel burning and fertiliser use increase reactive nitrogen in the atmosphere; excess deposition disrupts nutrient balance, favouring fast-growing plants over mosses and fungi. Chronic high nitrogen input acidifies soils, reduces biodiversity and releases greenhouse gases like nitrous oxide. The critical-load concept is used to assess ecosystem tolerance thresholds.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#氮沉降 #森林生态 #养分平衡
为什么在一些城市中心减少氮氧化物排放反而使臭氧浓度上升？
Why can cutting nitrogen oxides in some city centres actually raise ozone levels?
近地面臭氧由氮氧化物与挥发性有机物在阳光下的非线性光化学反应生成，其响应可用等浓度曲线图（EKMA 图）刻画。在交通密集的城市核心区，氮氧化物过量，一氧化氮会直接滴定消耗臭氧，此时体系处于挥发性有机物受限区，减少氮氧化物反而削弱了滴定作用，臭氧短期升高。这解释了周末效应：货车减少、氮氧化物下降的周末，市中心臭氧常高于工作日。有效对策是同时控制挥发性有机物，并按区域判断敏感性再制定策略。
Ground-level ozone forms through nonlinear photochemistry between nitrogen oxides and volatile organic compounds in sunlight, a response often mapped with ozone isopleth (EKMA) diagrams. In traffic-dense urban cores nitrogen oxides are in excess and nitric oxide titrates ozone away, so the system sits in a VOC-limited regime where cutting NOx weakens that titration and ozone rises in the short term. This explains the weekend effect, when fewer trucks and lower NOx leave downtown ozone higher than on weekdays. The remedy is to control VOCs simultaneously and to diagnose the regime region by region before setting strategy.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Seinfeld 与 Pandis《Atmospheric Chemistry and Physics》；美国环境保护署臭氧生成敏感性技术文件
Seinfeld and Pandis, Atmospheric Chemistry and Physics; U.S. EPA technical documents on ozone formation sensitivity
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-1-119-22117-3 (2006, Wiley)
#地面臭氧 #VOC受限区 #周末效应
PFAS 为什么被称为永久化学品？监管限值为何低到万亿分之几的量级？
Why are PFAS called forever chemicals, and why are regulatory limits set at parts per trillion?
全氟和多氟烷基物质的骨架是碳氟键，键能在有机化学中位居最高之列，自然条件下几乎不发生水解、光解或生物降解，因此能在水体、土壤和生物体内长期累积并随地下水远距离迁移。流行病学研究把 PFOA、PFOS 暴露与血脂异常、免疫应答减弱、甲状腺功能改变和某些癌症风险联系起来，且在极低浓度下即可观察到效应。美国环保署 2024 年发布的国家饮用水法规把 PFOA 与 PFOS 的最大污染物浓度定为每升 4 纳克，即万亿分之四。
Per- and polyfluoroalkyl substances are built around carbon-fluorine bonds, among the strongest in organic chemistry, so they resist hydrolysis, photolysis, and biodegradation and accumulate for decades in water, soil, and tissue while travelling far in groundwater. Epidemiology links PFOA and PFOS exposure to altered blood lipids, weakened immune response, thyroid effects, and elevated risk of certain cancers, with associations appearing at very low concentrations. The U.S. EPA's 2024 national drinking water regulation therefore set maximum contaminant levels of 4 nanograms per litre — four parts per trillion — for PFOA and PFOS.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
美国环境保护署《PFAS 国家饮用水一级法规》（2024）；欧洲食品安全局 PFAS 风险评估（2020）
U.S. EPA PFAS National Primary Drinking Water Regulation (2024); European Food Safety Authority PFAS risk assessment (2020)
#PFAS #碳氟键 #饮用水标准
什么是持久性污染物的“全球蒸馏效应”？
What is the global distillation effect of persistent pollutants?
半挥发性POPs（如PCBs和部分农药）在气温较高的地区蒸发进入大气。它们随气流向高纬度输送，遇冷重新沉降，然后再次蒸发、再次沉降，像蒸馏一样在冷陷阱中反复跳跃迁移，最终富集到极地。再叠加食物链的生物放大作用，北极熊乃至当地居民体内都检出了较高水平的污染物，尽管污染源远在数千公里之外。这正是POPs必须纳入全球管控（《斯德哥尔摩公约》）的经典证据。
Semi-volatile POPs such as PCBs and some pesticides evaporate into the atmosphere in warmer regions. They are carried poleward by air currents, condense when it gets cold, then evaporate and condense again, hopping poleward like a distillation column through cold traps until they accumulate in the Arctic. Combined with biomagnification up the food chain, polar bears and even local residents show elevated contaminant levels even though sources lie thousands of kilometres away. This is the classic evidence for why POPs require global control under the Stockholm Convention.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#全球蒸馏 #冷陷阱 #极地污染
《斯德哥尔摩公约》如何处理持久性有机污染物（POPs）？请举出一种典型物质。
How does the Stockholm Convention address persistent organic pollutants (POPs), and give one example compound?
《斯德哥尔摩公约》（2001）要求缔约方禁止或限制生产、使用和排放那些持久、可生物累积、能长距离迁移的有毒化学品。典型例子是二噁英，它在焚烧与工业过程中产生，难以降解并在食物链中富集。
The Stockholm Convention (2001) obliges parties to eliminate or restrict chemicals that are persistent, bioaccumulative, and long-range transportable. A classic example is dioxins, formed in incineration and industry, that resist degradation and build up in food chains.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#斯德哥尔摩公约 #持久性有机污染物 #二噁英
污水处理厂的好氧和厌氧工艺有什么区别？
What is the difference between aerobic and anaerobic wastewater treatment processes?
好氧工艺在供氧条件下用微生物分解有机物，出水清澈但耗能较高，并产生大量剩余污泥。厌氧工艺在无氧条件下发酵，产生可作能源的甲烷，适合高浓度有机废水且污泥量少。两者常组合使用以兼顾效率与能源回收。
Aerobic processes use oxygen-fed microbes to break down organics, giving clear effluent but higher energy use and more sludge. Anaerobic processes ferment without oxygen, producing methane as energy and suiting high-strength wastewater with little sludge. The two are often combined to balance efficiency and energy recovery.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#污水处理 #好氧 #厌氧
农药残留限量标准是如何制定的？为什么“有残留”不等于“有毒”？
How are pesticide residue limits set, and why does a residue detected not equal toxicity?
各国依据毒理学实验设定最大残留限量（MRL），它是在安全摄入量以内允许的残留上限。只要残留低于该限量，通常健康风险可以忽略，因此检出残留并不等于超标或有害。但这类标准主要针对单一物质，难以覆盖多种农药混合使用时产生的协同效应。此外，它也难以反映对传粉昆虫等非靶生物造成的生态毒性，这正是新烟碱类等农药被限用的原因之一。
Countries set Maximum Residue Limits (MRLs) from toxicology studies; an MRL is the upper bound on residues compatible with safe daily intake. As long as a residue stays below the limit, health risk is usually negligible, so detecting a residue is not the same as exceeding the limit or being harmful. But such standards focus on single substances and cannot capture the synergistic effects of mixed pesticides. Nor do they reflect ecotoxicity to non-target organisms such as pollinators — one reason neonicotinoids were restricted.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#农药残留 #最大残留限量 #生态毒性
什么是汞的生物放大效应？
What is the biomagnification of mercury?
无机汞在微生物作用下转化为甲基汞，后者脂溶性强并在食物链中逐级富集。顶级捕食鱼类体内的甲基汞浓度可比水体高出上百万倍，威胁食用者神经发育。这解释了为何大型肉食鱼被建议限量食用。
Inorganic mercury is converted by microbes to methylmercury, which is fat-soluble and accumulates up the food chain. Top predatory fish can carry methylmercury millions of times above water concentration, threatening neurodevelopment in consumers. That is why large carnivorous fish are advised in moderation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#汞 #生物放大 #甲基汞
二噁英是如何产生的，有哪些危害？
How are dioxins formed and what harm do they cause?
二噁英主要在含氯有机物不完全燃烧以及某些化工和漂白过程中生成，是无意产生的副产物。它极难降解，可在脂肪中富集并具有致癌、干扰内分泌和免疫毒性。控制焚烧温度超过850摄氏度并采用活性炭吸附可显著降低排放。
Dioxins are mainly formed during incomplete combustion of chlorinated organics and in some chemical and bleaching processes, as unintentional by-products. They are extremely persistent, accumulate in fat, and are carcinogenic with endocrine-disrupting and immunotoxic effects. Keeping combustion above 850 degrees Celsius plus activated-carbon adsorption markedly cuts emissions.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#二噁英 #焚烧 #毒性污染物
土壤一旦被污染，为什么特别难治理？
Why is contaminated soil so much harder to clean up than polluted air or water?
污染物进入土壤后移动缓慢、不易降解，会在土层中长期存留，还可能通过作物进入食物链。修复手段包括物理清挖换土、化学淋洗和生物修复（微生物降解、植物吸收富集），但周期长、成本高，且很难完全恢复原有功能。因此土壤保护的第一原则是源头防控，比事后修复经济得多。
Pollutants move and degrade slowly in soil, persisting for long periods and potentially entering the food chain through crops. Remediation options — physical excavation and soil replacement, chemical washing, and bioremediation using microbes or hyperaccumulator plants — are slow, costly and rarely restore the original functions fully. That is why source prevention is the first principle: it is far cheaper than cleaning up afterwards.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#土壤污染 #生物修复 #源头防控
湖泊为什么会突然“变绿、发臭”？
Why do lakes suddenly turn green and smelly?
农田化肥流失和生活污水把过量的氮、磷带入湖泊，藻类便大量暴发，水面一片绿色。藻类死亡后被细菌分解，耗尽水中氧气，导致鱼虾缺氧死亡、水体发臭，这就是富营养化。治理的关键在源头减磷控氮，比如截污、控制农业面源污染和恢复湿地缓冲带。
Runoff of crop fertilisers and discharge of sewage carry excess nitrogen and phosphorus into lakes, triggering algal blooms that turn the water green. When the algae die, bacteria decompose them and exhaust the oxygen, suffocating fish and making the water smelly — eutrophication. The cure lies at the source: intercepting pollution, limiting agricultural nutrient runoff and restoring wetland buffer strips.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-05
来源 · Source
《Nutrients, eutrophication and harmful algal blooms along the freshwater to marine continuum》,WIREs Water,2020 (DOI: 10.1002/wat2.1453)
'Nutrients, eutrophication and harmful algal blooms along the freshwater to marine continuum', WIREs Water, 2020, DOI: 10.1002/wat2.1453
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1002/wat2.1453
#富营养化 #氮磷 #藻华
什么是水体富营养化，如何治理？
What is water eutrophication and how is it managed?
富营养化是氮、磷等营养盐过量导致藻类暴发性繁殖，消耗溶解氧并造成鱼虾死亡。它常源于化肥流失和生活污水。治理包括控源截污、生态浮岛、人工湿地和适量打捞藻华。
Eutrophication is the explosive growth of algae caused by excess nitrogen and phosphorus, which depletes dissolved oxygen and kills fish. It usually stems from fertiliser runoff and sewage. Management includes source control, ecological floating islands, constructed wetlands and targeted algae removal.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#富营养化 #藻类 #水体治理
活性炭是如何净化水的？
How does activated carbon purify water?
活性炭内部有大量微孔，比表面积极大，能通过物理吸附捕获水中的有机物、余氯和异味分子。它常用于自来水深度处理和净水器滤芯。吸附饱和后需要更换或再生，否则会释放已吸附的污染物。
Activated carbon has a huge internal pore surface area that physically adsorbs organic matter, residual chlorine and odour molecules from water. It is widely used in advanced tap-water treatment and filter cartridges. Once saturated it must be replaced or regenerated, or it can release captured pollutants.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#水处理 #吸附 #活性炭
什么是VOCs，室内外来源有何不同？
What are VOCs, and how do indoor and outdoor sources differ?
挥发性有机物是在常温下易挥发的碳氢化合物，参与臭氧和二次气溶胶生成。室外主要来自机动车、溶剂使用和石化工业；室内则来自涂料、胶黏剂、清洁剂和燃烧。通风和源头选低VOC产品是控制关键。
Volatile organic compounds are carbon compounds that readily evaporate at room temperature and help form ozone and secondary aerosols. Outdoors they come from vehicles, solvents and petrochemicals; indoors from paints, adhesives, cleaners and combustion. Ventilation and low-VOC products are key controls.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#VOCs #臭氧 #室内污染
交通噪声为什么被列为仅次于空气污染的城市环境健康威胁？
Why is traffic noise ranked second only to air pollution among urban environmental health threats?
持续噪声即使在睡眠中也会触发交感神经与内分泌应激反应，导致皮质醇升高、睡眠结构碎片化，长期暴露与高血压、缺血性心脏病和认知功能下降相关。世界卫生组织欧洲区办公室 2018 年的环境噪声指南据此建议道路交通噪声的昼夜等效声级不超过 53 分贝、夜间不超过 45 分贝。因为噪声影响的是整座城市的人口基数，其疾病负担折算成健康寿命损失年在欧洲仅次于空气污染。
Sustained noise triggers sympathetic and endocrine stress responses even during sleep, raising cortisol and fragmenting sleep architecture, and chronic exposure is associated with hypertension, ischaemic heart disease, and cognitive impairment. On that basis the WHO Regional Office for Europe recommended in 2018 that road traffic noise stay below 53 decibels day-evening-night and 45 decibels at night. Because exposure covers whole urban populations, the resulting disease burden measured in healthy life years lost ranks second to air pollution in Europe.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#噪声污染 #睡眠干扰 #疾病负担
什么是持久性有机污染物（POPs）？《斯德哥尔摩公约》做了什么？
What are persistent organic pollutants (POPs), and what has the Stockholm Convention done?
POPs 是能在环境中存留数十年、随食物链富集并损害健康的人工化学品，例如DDT、多氯联苯（PCBs）和二噁英。2001年通过的《斯德哥尔摩公约》要求全球淘汰或限制其生产与使用，并清理历史存量，目前已管控数十种物质，是国际化学品治理的里程碑。
POPs are synthetic chemicals that persist in the environment for decades, bioaccumulate up food chains, and harm health — such as DDT, polychlorinated biphenyls (PCBs), and dioxins. The 2001 Stockholm Convention requires the global phase-out or restriction of their production and use and the cleanup of stockpiles; dozens of substances are now controlled, making it a milestone of international chemical governance.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#持久性有机污染物 #斯德哥尔摩公约 #化学品治理
放射性污染与化学污染有何区别？
How does radioactive contamination differ from chemical pollution?
放射性污染来自不稳定核素释放电离辐射，危害随半衰期衰减且无法通过化学手段中和。化学污染则由有毒物质引起，可借化学反应或吸附去除但可能长期残留。两者防护思路不同：前者讲屏蔽与距离，后者讲隔离与降解。
Radioactive contamination comes from unstable nuclides emitting ionising radiation; harm decays with half-life and cannot be neutralised chemically. Chemical pollution is from toxic substances removable by reaction or adsorption but may persist. Protection differs: shielding and distance for radiation, isolation and degradation for chemicals.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#放射性 #电离辐射 #化学污染
噪声污染对健康有哪些非听觉影响？
What non-auditory health effects does noise pollution have?
长期交通和邻里噪声会激活应激系统，升高血压、干扰睡眠并增加心血管疾病风险。即使睡眠中未被吵醒，噪声也可引起生理唤醒。城市绿带和隔音设计是常用缓解手段。
Chronic traffic and neighbourhood noise activates stress responses, raising blood pressure, disrupting sleep and increasing cardiovascular risk. Even without waking, noise can cause physiological arousal during sleep. Urban green belts and acoustic design are common remedies.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#噪声污染 #心血管 #睡眠
精准农业如何减少农药和化肥的污染？
How does precision agriculture reduce pesticide and fertilizer pollution?
精准农业用卫星定位、无人机、土壤传感器和作物模型，按地块甚至按植株的差异施肥打药，把投入用在“最需要的地方”。相比整田平均施用，它能显著减少化肥流失和农药用量，从而降低水体富营养化风险和对传粉者的伤害，同时保持甚至提高产量。
Precision agriculture uses GPS, drones, soil sensors, and crop models to apply fertilizer and pesticides according to field-zone or even plant-level differences, directing inputs exactly where needed. Compared with uniform application across a field, it sharply cuts fertilizer runoff and pesticide use, reducing eutrophication risk and pollinator harm while maintaining or raising yields.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#精准农业 #变量施肥 #污染防控
光污染是什么？它为什么也在破坏生态？
What is light pollution, and why does it also harm ecosystems?
光污染指人工照明过多或不当造成的夜空辉光、眩光和光线侵入，让城市夜晚不再有真正的黑暗。它会扰乱人体的昼夜节律、影响睡眠，也会让候鸟迷航、干扰昆虫和夜行生物的活动。暗夜保护区、遮光灯具和智慧调光照明正在成为国际上的主流对策。
Light pollution is the excessive or misdirected artificial light that creates skyglow, glare and intrusive light, robbing cities of true darkness. It disrupts human circadian rhythms and sleep, disorients migrating birds, and disturbs insects and nocturnal animals. Dark-sky reserves, shielded fixtures and smart dimming are becoming mainstream responses worldwide.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（光污染生态影响）
Nature (ecological effects of light pollution)
#光污染 #暗夜保护 #昼夜节律
垃圾焚烧发电是怎么运作的？它真的比填埋好吗？
How does waste-to-energy incineration work, and is it really better than landfilling?
焚烧炉在高温下把垃圾烧掉，用余热产生蒸汽推动汽轮机发电，垃圾体积可减少约九成，还能大幅降低填埋场的甲烷排放。不过焚烧需要严格的烟气净化来控制二噁英等污染物，而且能回收的应先回收。在做好分类的前提下，焚烧是比简单填埋更优的处置手段。
An incinerator burns waste at high temperature, using the heat to generate steam that drives a turbine and produces electricity, shrinking waste volume by about 90 percent and avoiding the methane a landfill would emit. But flue-gas cleaning is essential to control pollutants such as dioxins, and recyclables should always be recovered first. With good sorting, incineration beats simple landfilling.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-05
来源 · Source
Cherubini, Bargigli, Ulgiati,《Life cycle assessment (LCA) of waste management strategies: Landfilling, sorting plant and incineration》,Energy,2009 (DOI: 10.1016/j.energy.2008.08.023)
Cherubini, Bargigli, Ulgiati, 'Life cycle assessment (LCA) of waste management strategies: Landfilling, sorting plant and incineration', Energy, 2009, DOI: 10.1016/j.energy.2008.08.023
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1016/j.energy.2008.08.023
#垃圾焚烧 #垃圾发电 #二噁英
什么是内分泌干扰物（EDC）？为什么低剂量也可能有害？
What are endocrine-disrupting chemicals (EDCs), and why can even low doses be harmful?
内分泌干扰物是能干扰人体激素系统的化学物质，例如双酚A（BPA）、某些塑化剂和农药。它们的特别之处在于作用方式类似激素：极低浓度就可能改变发育、生殖与代谢，剂量与效应的关系并非线性，且在发育关键窗口期的低剂量暴露可能造成不可逆影响，对胎儿和儿童尤其值得警惕。
Endocrine disruptors are chemicals that interfere with the body's hormone system — such as bisphenol A (BPA), certain plasticizers, and pesticides. Their special danger is acting like hormones: even extremely low levels can alter development, reproduction, and metabolism; dose-response is non-linear, and low-dose exposure during critical developmental windows can cause irreversible effects, especially for fetuses and children.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#内分泌干扰物 #双酚A #低剂量效应
光化学烟雾是怎么形成的？
How does photochemical smog form?
光化学烟雾是氮氧化物和挥发性有机物在阳光照射下发生光化学反应，生成臭氧和过氧乙酰硝酸酯等二次污染物。它多见于高温、强日照且汽车密集的城市。这种烟雾会刺激呼吸道并损害植物叶片。
Photochemical smog forms when nitrogen oxides and volatile organic compounds undergo sunlight-driven reactions that produce secondary pollutants such as ozone and peroxyacetyl nitrate. It is common in hot, sunny, traffic-dense cities. The resulting haze irritates the respiratory tract and damages plant foliage.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#光化学烟雾 #臭氧 #大气污染
什么是富营养化？它如何在湖泊和近海造成死区？
What is eutrophication and how does it create dead zones in lakes and coasts?
富营养化是氮、磷等营养盐过量进入水体，促使藻类暴发性繁殖。藻类死亡分解耗尽溶解氧，形成鱼虾无法存活的低氧死区，如墨西哥湾每年夏季出现大片缺氧区。
Eutrophication occurs when excess nitrogen and phosphorus spur algal blooms. As the algae die and decompose, they deplete dissolved oxygen, creating hypoxic dead zones where fish cannot survive, such as the large low-oxygen area in the Gulf of Mexico each summer.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#富营养化 #死区 #水体污染
世界卫生组织 2021 年为何把 PM2.5 年均指导值从 10 收紧到 5 微克每立方米？
Why did the World Health Organization tighten its annual PM2.5 guideline from 10 to 5 micrograms per cubic metre in 2021?
2005 年版指导值之后积累的大规模队列研究显示，即使在低浓度区间，细颗粒物暴露与心血管疾病、肺癌和全因死亡率之间仍存在显著且近乎无阈值的剂量反应关系。综合北美、欧洲与亚洲的证据后，世卫组织把年均指导值下调到 5 微克每立方米，24 小时值定为 15。该值是健康基准而非法定标准，各国需据此制定分阶段的过渡目标。
Large cohort studies published after the 2005 guidelines showed a strong, essentially threshold-free exposure-response relationship between fine particulate matter and cardiovascular disease, lung cancer, and all-cause mortality, even at low concentrations. Weighing evidence from North America, Europe, and Asia, WHO lowered the annual guideline to 5 micrograms per cubic metre with a 24-hour level of 15. The figure is a health benchmark rather than a legal limit, so countries are expected to set staged interim targets toward it.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
世界卫生组织《全球空气质量准则》（WHO Global Air Quality Guidelines, 日内瓦, 2021, 含PM2.5健康效应章节）
World Health Organization. WHO Global Air Quality Guidelines: Particulate Matter (PM2.5 and PM10), Ozone, Nitrogen Dioxide and Sulfur Dioxide. Geneva: WHO, 2021
#PM2.5 #空气质量指导值 #剂量反应关系
把厨余垃圾堆肥，能比填埋少排放多少温室气体？
How much does composting kitchen waste cut greenhouse emissions compared with landfilling?
厨余在填埋场里厌氧分解会大量释放甲烷这种强温室气体；而好氧堆肥让微生物在有氧条件下分解有机物，主要释放二氧化碳，并且把养分留在肥料里。多数研究估计，堆肥较填埋可减少一半以上的温室气体排放，具体幅度取决于填埋场的甲烷收集率与堆肥设施水平。因此堆肥不仅减排，还能把厨余变成改良土壤的肥料，形成“从餐桌到农田”的循环。
Food waste decomposing anaerobically in landfills releases methane, a potent greenhouse gas. Composting, in contrast, lets microbes break down organic matter with oxygen, releasing mostly CO2 and keeping nutrients in the finished fertiliser; most studies estimate composting cuts greenhouse emissions by more than half compared with landfilling, though the exact figure depends on how much methane a landfill captures. So composting both reduces emissions and turns kitchen scraps into soil improvers — a closed loop from table to farmland.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#堆肥 #厨余 #甲烷减排
什么是 PM2.5？为何它比更大的颗粒物危害更大？
What is PM2.5 and why is it more harmful than larger particulates?
PM2.5 指空气动力学直径 ≤2.5 微米的细颗粒物，可深入肺泡并进入血液。它常携带重金属与多环芳烃等毒物，与心肺疾病、中风和过早死亡显著相关。
PM2.5 refers to fine particles ≤2.5 µm that penetrate deep into alveoli and enter the bloodstream. Carrying toxins like heavy metals and PAHs, it is strongly linked to heart and lung disease, stroke, and premature death.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#PM2.5 #细颗粒物 #空气污染
什么是生物修复技术？
What is bioremediation technology?
生物修复利用微生物、植物或真菌降解或固定环境中的污染物，使其毒性降低。常见应用包括用石油降解菌清理溢油、用超富集植物提取土壤重金属。它通常成本低、扰动小，但受场地温度和污染物的可生物降解性限制。
Bioremediation uses microbes, plants or fungi to degrade or immobilise contaminants and reduce their toxicity. Examples include oil-spill cleanup with degrading bacteria and metal extraction by hyperaccumulator plants. It is usually low-cost and low-disturbance but limited by site temperature and the contaminants' biodegradability.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#生物修复 #微生物 #污染治理
土壤重金属污染的主要来源有哪些？
What are the main sources of soil heavy-metal contamination?
主要来源包括采矿冶炼废渣、工业废水灌溉、含重金属的农药化肥以及大气沉降。镉、铅、砷等可在土壤中长期残留并进入农作物。治理常采用客土、钝化剂和植物修复等手段。
Major sources include mining and smelting waste, irrigation with industrial wastewater, metal-containing pesticides and fertilisers, and atmospheric deposition. Cadmium, lead and arsenic can persist in soil and enter crops. Remediation often uses soil replacement, stabilising agents and phytoremediation.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
联合国粮食及农业组织（FAO）《世界土壤资源状况》
FAO, State of the World's Soil Resources
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787511628619（豆瓣书目条目: 世界土壤资源状况）
#土壤污染 #重金属 #修复
为什么药品会出现在河流里？
Why do pharmaceuticals turn up in rivers?
人服用的抗生素、止痛药等并未被身体完全吸收，相当一部分经尿液进入下水道，而常规污水处理厂并非为去除这些微量物质而设计，于是药物及其代谢物进入河流。微量药物可能影响水生生物的行为和繁殖，并推动耐药菌扩散，是正在兴起的“新型污染物”治理课题。
A large share of antibiotics and painkillers taken by people is not absorbed and leaves the body in urine, reaching sewers; conventional treatment plants are not designed to remove such trace compounds, so drugs and their metabolites enter rivers. Trace pharmaceuticals can affect aquatic behaviour and reproduction and spread antibiotic-resistant bacteria — a growing concern in the governance of emerging contaminants.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
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出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国科学院（新型污染物研究）
Chinese Academy of Sciences (emerging contaminants)
#药品残留 #新型污染物 #污水处理
电子废弃物中的贵金属如何回收？
How are precious metals recovered from e-waste?
电路板中含有金、银、铜和少量钯，回收先经拆解和破碎，再用火法或湿法冶金提取。湿法用化学溶液选择性溶解金属，再电解或沉淀回收。规范回收既能减少原生矿开采，也能避免铅和溴化阻燃剂污染。
Circuit boards contain gold, silver, copper and small amounts of palladium; recovery starts with dismantling and crushing, then pyrometallurgy or hydrometallurgy. Hydrometallurgy uses chemical solutions to selectively dissolve metals, followed by electrolysis or precipitation. Proper recycling cuts primary mining and avoids lead and brominated flame-retardant pollution.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#电子废弃物 #金属回收 #循环经济
臭氧在高层是“保护伞”，到了地面怎么就成了污染物？
Ozone is a shield in the stratosphere — why is it a pollutant at ground level?
平流层的臭氧吸收紫外线，是地球的天然屏障；而近地面的臭氧属于二次污染物，由氮氧化物和挥发性有机物在强阳光下经光化学反应生成，夏季午后浓度最高。它会刺激眼睛和呼吸道，还会伤害农作物。控制氮氧化物和VOCs排放是治理地面臭氧的根本办法。
Stratospheric ozone shields us from ultraviolet rays, but ground-level ozone is a secondary pollutant formed when nitrogen oxides and volatile organic compounds react in strong sunlight, peaking on summer afternoons. It irritates the eyes and airways and damages crops. Cutting NOx and VOC emissions is the fundamental fix for ground-level ozone.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#臭氧 #光化学污染 #VOCs
汞污染为何需要一部全球公约才能治理？
Why does mercury pollution require a global treaty to control?
元素汞在常温下即可挥发，能在大气中停留数月并随环流跨洲输送，沉降入水体后经微生物转化为甲基汞，在食物链中生物放大数万倍，最终集中在金枪鱼等高营养级鱼类体内。这意味着任何单一国家的减排都无法保护本国居民，跨境属性要求集体行动。《水俣公约》2013 年通过、2017 年生效，管制汞的开采、贸易、添汞产品与手工小规模采金等主要排放源。
Elemental mercury volatilises at ambient temperature, persists in the atmosphere for months, and travels between continents, then deposits into water where microbes convert it to methylmercury that biomagnifies tens of thousands of times up the food chain into predators such as tuna. No country can protect its own population by acting alone, so the transboundary nature of the problem forces collective action. The Minamata Convention, adopted in 2013 and in force since 2017, regulates mercury mining, trade, added-mercury products, and artisanal small-scale gold mining.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#汞循环 #甲基汞 #水俣公约
一次污染物与二次污染物有何区别？请举例说明。
What is the difference between primary and secondary air pollutants, with examples?
一次污染物直接排放到大气中，如二氧化硫（SO₂）和一氧化碳（CO）；二次污染物由一次污染物在阳光或水汽中发生化学反应生成，如地面臭氧（O₃）和硫酸盐气溶胶。许多雾霾中的细颗粒正是二次形成的。
Primary pollutants are emitted directly, such as sulfur dioxide (SO₂) and carbon monoxide (CO); secondary pollutants form when primaries react in sunlight or moisture, such as ground-level ozone (O₃) and sulfate aerosols. Much fine-particle haze is secondary in origin.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
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出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
美国环保署（EPA）《空气污染物分类与臭氧成因说明》
US EPA, Air Pollutant Categories and Ground-Level Ozone Basics
#一次污染物 #二次污染物 #地面臭氧
现代填埋场为什么还要“防渗、收气”？
Why do modern landfills need leak-proof liners and gas collection?
垃圾在填埋场厌氧分解会产生两类风险：一是渗滤液，也就是高浓度的污染液体，需要底部防渗膜收集处理后达标排放，防止污染地下水；二是填埋气，以甲烷为主，既易燃也属强温室气体，可抽气收集用于发电。现代卫生填埋场通过防渗层、气体收集井和封场覆盖把这些风险管起来。
Waste decomposing anaerobically in a landfill creates two hazards. Leachate — a highly polluted liquid — must be intercepted by an impermeable liner and treated before release so it cannot contaminate groundwater. Landfill gas, mostly methane, is flammable and a potent greenhouse gas; wells collect it for flaring or power generation. Modern sanitary landfills manage both through liners, gas wells and final covers.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#填埋场 #渗滤液 #填埋气
城市的河涌为什么会发黑发臭？又如何治理？
Why do urban streams turn black and odorous, and how are they cleaned up?
污水直排、雨污混流让河涌积聚大量有机物，缺氧条件下厌氧菌分解产生硫化氢等臭味气体，水体就变黑变臭。治理遵循“控源截污、内源治理、生态修复”：先堵住排口、清理淤泥，再用曝气和水生植物恢复自净能力。实践经验表明，切断污染源头是最关键的一步。
Sewage discharged straight into urban streams supplies so much organic matter that oxygen is depleted; anaerobic bacteria then produce hydrogen sulphide and other smelly gases, and the water turns black and odorous. Restoration follows three steps: intercepting pollution sources, dredging accumulated sediment, and rebuilding self-purification with aeration and aquatic plants. Experience shows source control is the decisive step.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国生态环境部（城市黑臭水体整治）
MEE (urban black-odorous water remediation)
#黑臭水体 #水环境治理 #截污
为什么湖泊出现蓝藻水华时，控磷通常比控氮更有效？
Why is controlling phosphorus usually more effective than nitrogen for lake cyanobacteria blooms?
淡水湖泊的初级生产往往受磷限制，因为许多蓝藻能固定空气中的氮气，却无法自己制造磷。加拿大实验湖区的著名分区加富实验直接演示了这一点：只加氮和碳的一侧没有明显变化，加了磷的一侧迅速出现浓绿水华。因此控制生活污水、洗涤剂和农田径流中的磷输入，是减轻富营养化的关键，但在河口等咸淡水环境中氮往往成为限制因子，策略需要调整。
Primary production in fresh water is often phosphorus-limited because many cyanobacteria can fix atmospheric nitrogen but cannot manufacture phosphorus for themselves. The famous divided-lake fertilisation experiment at Canada's Experimental Lakes Area demonstrated it directly: the basin receiving only nitrogen and carbon changed little while the phosphorus-fed side turned bright green with bloom. Cutting phosphorus inputs from sewage, detergents, and farm runoff is therefore central to easing eutrophication, though in estuaries and coastal waters nitrogen usually becomes limiting and the strategy must change.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Schindler（1974）《Science》湖泊富营养化全湖实验；加拿大实验湖区（IISD-ELA）长期研究
Schindler (1974), Science, whole-lake eutrophication experiments; Canada's Experimental Lakes Area (IISD-ELA) long-term research
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1126/science.184.4139.897（复合著录按段核验：本标识只担
#富营养化 #磷限制 #实验湖区
光污染除了让人看不到星星，还会造成哪些生态后果？
Beyond hiding the stars, what ecological damage does light pollution cause?
人工夜间照明改变了生物赖以定时的昼夜与月相信号：候鸟被城市光柱吸引偏离迁徙路线并撞击建筑，刚孵化的海龟幼体朝内陆灯光而非海面爬行，夜行昆虫聚集在灯下耗尽体力并被捕食，形成生态陷阱。植物的开花与落叶节律、鱼类的洄游与哺乳动物的觅食时段也随之扰乱。夜空亮度地图显示全球超过八成人口生活在光污染天空下，减缓办法包括限制向上溢光、降低色温和采用定时调光。
Artificial light at night rewrites the day-night and lunar cues organisms use for timing: migrating birds are drawn off course by city light domes and collide with buildings, hatchling sea turtles crawl toward inland lamps instead of the surf, and nocturnal insects exhaust themselves circling fixtures where predators wait, creating ecological traps. Plant flowering and leaf-fall schedules, fish migration, and mammal foraging windows are disrupted as well. Night-sky brightness atlases show over 80% of the world's population lives under light-polluted skies; mitigation includes shielding upward spill, lowering colour temperature, and timed dimming.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Falchi 等（2016）《Science Advances》夜空亮度新世界地图；国际暗天协会（DarkSky International）技术指南
Falchi et al. (2016), Science Advances, New world atlas of artificial night sky brightness; DarkSky International technical guidance
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1126/sciadv.1600377：The new world atlas o
#光污染 #生态陷阱 #夜空亮度
为什么PM2.5比普通灰尘更值得警惕？
Why is PM2.5 more dangerous than ordinary dust?
PM2.5指直径不超过2.5微米的细颗粒物，比头发丝直径的约三十分之一还小，能绕过呼吸道防线直达肺泡、进入血液，与心血管和呼吸系统疾病相关。它主要来自燃烧、工业排放和汽车尾气等。控制PM2.5需要从源头减排，这也是空气质量优良天数增加的关键。
PM2.5 is fine particulate matter no wider than 2.5 micrometres — smaller than about one-thirtieth of a hair's diameter — so it slips past the respiratory defences into the deep lungs and bloodstream, and is linked to cardiovascular and respiratory illness. It comes mainly from burning, industry and vehicle exhaust. Cutting PM2.5 at source is the key to more days of good air quality.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#PM2.5 #细颗粒物 #空气质量
为什么PFAS被称为“永久化学品”？它有什么危害？
Why are PFAS called forever chemicals, and what harms do they cause?
PFAS（全氟和多氟烷基物质）用于不粘锅、防水服和消防泡沫等产品，其碳—氟键极强，在环境和人体中几乎不降解，因此被称为“永久化学品”。部分PFAS会在血液和器官中蓄积，与免疫功能、甲状腺和生育问题相关联，正推动全球限控和替代材料的研发。
PFAS (per- and polyfluoroalkyl substances), used in non-stick cookware, waterproof clothing, and firefighting foam, have extremely strong carbon-fluorine bonds and barely degrade in the environment or the body — hence the name forever chemicals. Some PFAS accumulate in blood and organs and are linked to immune, thyroid, and fertility effects, driving global restrictions and the development of alternatives.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《Science》全氟化合物综述
Science PFAS review
#PFAS #持久性化学品 #氟化物
噪声污染除了吵，还会伤害我们的健康吗？
Besides being annoying, can noise pollution actually harm our health?
会的。长期暴露在交通、施工等噪声中，不仅损伤听力，还与高血压、心脏病、睡眠障碍和儿童学习困难相关。声音以分贝计量，长期超过70分贝即有健康风险。城市里的隔声屏障、建筑隔音和“安静时段”管理都是有效的缓解措施。
Yes. Chronic exposure to traffic and construction noise does more than irritate — it can damage hearing and is linked to high blood pressure, heart disease, disturbed sleep and learning difficulties in children. Sound is measured in decibels; sustained levels above about 70 dB carry health risks. Noise barriers, soundproofed buildings and quiet-hour management are effective countermeasures.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国生态环境部（声环境质量标准）
MEE (noise environment standard)
#噪声污染 #分贝 #城市健康
微塑料是如何进入饮用水系统的？
How do microplastics enter drinking water systems?
微塑料通过地表径流、污水处理厂出水以及自来水管道和滤膜的磨损进入供水网络。由于粒径常小于5毫米，常规砂滤难以完全拦截。虽然目前饮用水中的微塑料浓度极低，其长期健康影响仍在研究中。
Microplastics enter the water supply through surface runoff, treated wastewater effluent, and wear from pipes and filter membranes. Because they are often under 5 millimetres, conventional sand filtration cannot fully intercept them. Concentrations in tap water are currently very low, and their long-term health effects are still under study.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国科学院生态环境研究中心；Environmental Science & Technology (ACS) 微塑料专刊
Environmental Science & Technology (ACS), microplastics special issues; Nature Sustainability
#微塑料 #饮用水 #水污染
工业生产中的循环水有什么意义？
What is the significance of recirculated water in industry?
循环水系统把冷却或工艺用水处理后重复利用，大幅减少取用新鲜水量和废水排放。它需要配套沉淀、过滤和缓蚀防垢措施以维持水质。在缺水地区，循环水是保障生产和生态的关键手段。
Recirculated water systems treat and reuse cooling or process water, sharply cutting fresh withdrawals and effluent. They need sedimentation, filtration and corrosion-scale control to maintain quality. In water-scarce regions, recirculation is key to both production and ecology.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#循环水 #工业节水 #废水回用
微塑料是从哪里来的？它会进入我们身体吗？
Where do microplastics come from, and can they get into our bodies?
微塑料是直径小于5毫米的塑料碎片，来自塑料瓶袋的磨损、化纤衣物洗涤时脱落的纤维，以及大块塑料在环境中缓慢碎裂。它们已广泛存在于海洋、河流、土壤乃至人体组织和血液样本中，并能沿着食物链逐级累积。最有效的应对是减少一次性塑料、完善回收。
Microplastics are plastic fragments under 5 mm, shed from worn bottles and bags, fibres released when washing synthetic clothes, and the slow crumbling of larger plastic litter. They are now widespread in oceans, rivers, soils and even human tissue and blood samples, and can accumulate up the food chain. The most effective response is using less single-use plastic and improving recycling.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
A. L. Andrady，《海洋环境中的微塑料》，《Marine Pollution Bulletin》第62卷（2011）：1596–1605，DOI: 10.1016/j.marpolbul.2011.05.030
A. L. Andrady, 'Microplastics in the marine environment', Marine Pollution Bulletin 62 (2011): 1596-1605, DOI: 10.1016/j.marpolbul.2011.05.030
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1016/j.marpolbul.2011.05.030：Microplastic
#微塑料 #塑料污染 #食物链
空气质量指数（AQI）是什么？数值超过 100 意味着什么？
What is the AQI (Air Quality Index) and what does a value above 100 indicate?
AQI 把多种污染物浓度换算成 0–500 的单一指数，便于公众理解健康风险。超过 100 通常属于对敏感人群不健康，PM2.5 或臭氧偏高时常见，儿童与老人应减少户外活动。
The AQI converts several pollutant concentrations into a single 0–500 scale for public health communication. Above 100 it is generally unhealthy for sensitive groups, common when PM2.5 or ozone is high, so children and the elderly should cut outdoor activity.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#空气质量指数 #AQI #健康风险
什么是点源污染和非点源污染？
What are point-source and non-point-source pollution?
点源污染来自可明确识别的单一排放口，例如工厂排污管或污水处理厂出水。非点源污染则来自分散、难以定位的来源，如农田径流和城市道路雨水冲刷。治理上，点源较易通过许可和末端处理控制，非点源更依赖源头管理和土地利用规划。
Point-source pollution comes from a single identifiable discharge, such as a factory pipe or a sewage treatment plant outlet. Non-point-source pollution arises from diffuse, hard-to-trace origins like agricultural runoff and stormwater from roads. Point sources are easier to control with permits and end-of-pipe treatment, while non-point sources rely more on source control and land-use planning.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#水污染 #污染源 #环境治理
总悬浮颗粒物和PM2.5有什么区别？
What is the difference between total suspended particulates and PM2.5?
总悬浮颗粒物指空气中所有悬浮的固体和液体微粒，粒径范围很宽。PM2.5专指空气动力学直径不大于2.5微米的细颗粒，能深入肺泡甚至进入血液，健康风险更高。监测PM2.5比总悬浮颗粒物更能反映呼吸健康威胁。
Total suspended particulates cover all airborne solid and liquid particles across a wide size range. PM2.5 specifically refers to fine particles no larger than 2.5 micrometres, which can reach the alveoli and even the bloodstream, posing higher health risks. Monitoring PM2.5 better reflects respiratory health threats than total suspended particulates.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#颗粒物 #PM2.5 #空气质量
为什么室内空气污染有时比室外更严重？
Why can indoor air pollution sometimes be worse than outdoor?
室内污染源密集且通风有限，包括装修材料释放的甲醛、烹饪油烟、二手烟和清洁剂的挥发性有机物。人在室内停留时间往往占全天八成以上，暴露量因此被放大。改善通风和使用低释放材料是主要对策。
Indoor pollution sources are concentrated and ventilation is often limited, including formaldehyde from building materials, cooking fumes, second-hand smoke and VOCs from cleaners. People spend over 80 percent of their day indoors, amplifying exposure. Better ventilation and low-emission materials are the main remedies.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#室内空气污染 #甲醛 #通风
酸雨的pH阈值是多少，主要成分是什么？
What is the pH threshold of acid rain and what are its main components?
天然雨水因溶解二氧化碳本身呈弱酸性，pH约为5.6；pH低于此值通常被视为酸雨。其主要成分是硫酸和硝酸，来自燃煤和机动车排放的二氧化硫与氮氧化物。酸雨会酸化土壤和湖泊，并腐蚀建筑材料。
Natural rain is already weakly acidic at about pH 5.6 due to dissolved carbon dioxide; values below that are generally considered acid rain. Its main components are sulphuric and nitric acids from sulphur dioxide and nitrogen oxides emitted by coal burning and vehicles. Acid rain acidifies soils and lakes and corrodes building materials.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#酸雨 #二氧化硫 #氮氧化物
什么是酸雨？它是什么造成的？
What is acid rain and what makes it?
酸雨是混有二氧化硫和氮氧化物等污染物的雨水，呈酸性。工厂、汽车和燃煤电厂排放的这些气体升到空中，与水汽结合后随雨落下，会伤害树木和湖泊。
Acid rain is rainwater mixed with pollutants like sulfur dioxide and nitrogen oxides, making it acidic. Factories, cars, and coal plants release these gases, which rise, combine with water vapor, and fall as rain that harms trees and lakes.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
戴树桂 主编,《环境化学》第2版,高等教育出版社,2006
Dai Shugui ed., Environmental Chemistry, 2nd ed., Higher Education Press, 2006
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040199567（按标识回读: 环境化学）
#酸雨 #二氧化硫 #空气污染
垃圾分类对回收和处置有什么意义？
Why does waste sorting matter for recycling and disposal?
分类把可回收物、厨余和有害垃圾分开，能提升再生料纯度并降低处理难度。有害垃圾单独收集可避免污染土壤和水体。做好源头分类比末端分选更经济高效。
Sorting separates recyclables, kitchen waste and hazardous waste, raising recyclate purity and easing treatment. Separate hazardous collection prevents soil and water contamination. Source sorting is cheaper and more efficient than end-of-pipe separation.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#垃圾分类 #回收 #有害垃圾