food-systems Environment

11 个科学问题 · 环境生态 Environment

本页目录

垂直农业真的比传统农业更低碳吗?

Is vertical farming really lower-carbon than conventional farming?

垂直农场省水省地、运输短,但人工光照与温控耗电极高;若电网不清洁,其单位食物碳足迹可能高于田间种植,关键在于能源结构。
Vertical farms save water, land and transport, but artificial light and climate control are energy-hungry; on a dirty grid their per-food carbon can exceed fields—it hinges on the energy mix.
难度 专业 · 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 Food

Nat Food

#垂直农业 #能耗 #碳足迹

哪类食品“本地化”对减碳收益最大?

For which foods does 'localizing' cut the most carbon?

对运输占比高的易腐蔬果、空运进口生鲜,本地化收益明显;而对牛肉等生产端排放极高的食品,改饮食结构比缩短里程更有效。
For perishables and air-freighted produce where transport dominates, localization helps most; for beef with huge production emissions, dietary change beats shortening miles.
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。

PNAS / Our World in Data

PNAS; OWID

#食物里程 #本地化 #饮食

为什么“少吃一点肉”被很多研究列为个人最高性价比的减碳行动之一?

Why is 'eating a bit less meat' rated by many studies as a top cost-effective personal carbon cut?

畜产品的土地、水、甲烷与饲料运输链条长、排放高,膳食微调几乎零成本就能砍掉可观碳排;它还能顺带改善健康,是少数“省钱又减排”的行为。
Livestock carry long chains of land, water, methane and feed transport with high emissions; a small dietary tweak cuts notable carbon at near-zero cost and often improves health—rare 'saves money and emissions' behavior.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#少吃肉 #膳食 #性价比

大面积“单一栽培”有什么生态风险?

What ecological risks does large-scale monoculture carry?

单一栽培指连片只种一种作物,遗传和生境都单一,一旦遇上特定病虫害或极端天气容易整体歉收。它还会减少传粉昆虫和土壤生物,削弱农田自身的调控能力。
Monoculture means growing one crop over large areas, with uniform genetics and habitat, so a single pest, disease or weather shock can wreck the whole harvest. It also reduces pollinators and soil life, weakening the farmland's self-regulation.
难度 进阶 · 适合 小学高段(9-12) CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#单一栽培 #病虫害 #生物多样性

农药是怎么沿食物链“放大”的?

How do pesticides amplify along the food chain?

某些难降解的农药(如有机氯)在生物体内不易排出,会随着捕食被一层层积累、浓度逐级升高,即生物放大。顶级捕食者体内的含量往往比环境高出成千上万倍,威胁鹰、鱼鹰等物种。
Some persistent pesticides (e.g. organochlorines) are not easily excreted and accumulate level by level as predators eat prey—biomagnification. Top predators can carry thousands of times the environmental concentration, threatening eagles and ospreys.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#农药 #生物放大 #难降解

吃一顿牛排和吃一顿豆制品,水与碳的账怎么差那么多?

Why do a beef steak and a soy meal differ so much in water and carbon accounts?

牛要养数年、反刍产甲烷、吃大量饲料与饮水,单位蛋白的碳与水足迹常是豆制品的数倍到数十倍;适度用豆类、禽蛋替代红肉,是家庭最易行的减碳减水吃法。
Cattle take years, emit ruminant methane and eat lots of feed and water, so per-protein carbon and water footprints are often several to tens of times soy's. Swapping some red meat for beans or eggs is an easy home cut.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#牛排 #豆制品 #蛋白足迹

哈伯—博施法对农业意味着什么?

What does the Haber–Bosch process mean for agriculture?

它用高温高压把空气中的氮气和氢气合成氨,进而制造氮肥,使人类能大规模提高粮食产量。但其能耗高、并带来氮流失造成的水体和大气污染,是“双刃剑”。
It synthesizes ammonia from atmospheric nitrogen and hydrogen under heat and pressure, enabling mass-produced nitrogen fertilizer and much higher crop yields. But it is energy-hungry and its nitrogen runoff drives water and air pollution—a double-edged sword.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#哈伯—博施 #合成氨 #氮肥

“食物里程”能完整衡量食物的环境影响吗?

Does 'food miles' fully measure a food's environmental impact?

食物里程只算运输距离,并不能完整反映环境影响。全生命周期来看,牛肉、乳制品的生产排放往往远高于其运输排放,所以“本地食物”未必总是更低碳,还要看生产方式。
Food miles count only transport distance and miss the bigger picture. Over a full life cycle, beef and dairy production emissions often dwarf those from transport, so 'local' food is not always lower-carbon; how it is produced matters more.
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。

FAO《畜牧业的全面份额:环境议题与选项》(Livestock's Full Share: Environmental Issues and Options),2013

FAO, Livestock's Full Share: Environmental Issues and Options, 2013

#食物里程 #运输 #全生命周期

食物浪费在家里最容易发生的是哪几个环节,怎么断?

Where at home does food waste most easily happen, and how to stop it?

买多存坏、看错保质期、剩菜没人吃是三大漏洞。按清单采购、先吃快坏的、剩菜变下一餐,能把家庭浪费砍掉一大半。
Buying too much, misreading dates and uneaten leftovers are the three big leaks. Shop from a list, eat the soon-to-spoil first and repurpose leftovers to cut household waste by half or more.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#食物浪费 #采购清单 #剩菜

“再生农业”和“有机农业”是一回事吗?

Are 'regenerative' and 'organic' agriculture the same thing?

不是。有机偏重禁用合成投入品;再生农业更强调恢复土壤健康、碳与生态功能(免耕、轮牧、覆盖等),二者可重叠但并不等同,也不都承诺净固碳。
No. Organic focuses on banning synthetic inputs; regenerative emphasizes restoring soil health, carbon and ecology (no-till, grazing, cover crops). They overlap but differ and don't all guarantee net carbon gain.
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

G. Tyler Miller,《Living in the Environment》Cengage 多版

G. T. Miller, Living in the Environment, Cengage Learning, various editions

#再生农业 #有机 #土壤健康

为什么“减少食物浪费”常被称为“负成本”的减排?

Why is cutting food waste called 'negative-cost' emission reduction?

少浪费既能省下生产、运输、冷藏的钱,又避免这些环节已产生的温室气体,往往不花钱甚至省钱就能减碳,是性价比最高的措施之一。
Wasting less saves the money spent producing, shipping and chilling food and avoids the GHGs already emitted—often free or money-saving mitigation, among the highest-value actions.
难度 入门 · 适合 小学低段(6-8) 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。

Project Drawdown

Project Drawdown

#食物浪费 #减排 #成本