什么是“残余排放”与“抵消”（offset），为何净零中需谨慎使用？
What are 'residual emissions' and 'offsets', and why use them cautiously in net zero?
难以削减的排放（如水泥工艺、航空）称残余排放，常用碳汇或碳信用抵消。但抵消质量参差、可能“双重计算”或短期，会掩盖真实减排，故应优先直接减排。
Hard-to-abate emissions (cement process, aviation) are 'residual' and often offset by sinks or credits. But offset quality varies and may double-count or be temporary, masking real cuts—so direct reduction comes first.
难度 专业 · 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
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#净零 #抵消 #碳信用
为什么1.5°C路径要求全球约在2050年前后实现净零CO2，而甲烷需更快下降？
Why does the 1.5°C pathway require global CO2 net zero around 2050 while methane must fall faster?
CO2是长效累积气体，其升温由累积量决定，故需在世纪中叶归零以锁定升温；甲烷寿命仅约12年但短期增温强，快速削减能对近期降温产生立竿见影的效果，为脆弱地区争取时间。
CO2 is a long-lived cumulative gas whose warming is set by cumulative emissions, so it must reach zero around mid-century to cap warming; methane lives ~12 years but is a potent short-term forcer, so rapid cuts yield near-term cooling and buy time for vulnerable regions.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#净零 #甲烷 #1.5度
什么是“气候中和”（climate neutrality）与净零的微妙差别？
What is the subtle difference between 'climate neutrality' and net zero?
净零侧重CO2或所有温室气体的排放—移除平衡；气候中和有时还纳入非气候环境影响（如本地空气污染）的抵消，口径更宽，定义需看清。
Net zero emphasizes balancing CO2 or all GHG emissions with removals; climate neutrality sometimes also offsets non-climate impacts (e.g., local air pollution), a broader scope—read the definition carefully.
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
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#净零 #气候中和 #定义
什么是“范围1、2、3”排放？
What are 'Scope 1, 2 and 3' emissions?
范围1是企业直接燃烧和工艺排放；范围2是外购电力热力间接排放；范围3是价值链上下游（原料、运输、使用、废弃）排放，通常占比最大也最难核算。
Scope 1 is direct combustion and process emissions; Scope 2 is indirect from purchased energy; Scope 3 covers value-chain emissions (materials, transport, use, disposal)—usually largest and hardest to account.
难度 进阶 · 适合 小学高段(9-12)
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。
GHG Protocol
GHG Protocol
#碳核算 #范围排放 #企业
净零排放（net zero）是什么意思？
What does 'net zero' emissions mean?
净零是指在一定时期内，人为排放的温室气体与被自然或技术手段移除的量相抵消，使净增加为零。注意它不等于完全不排放，而是“排放=移除”。
Net zero means that, over a period, human-caused greenhouse gas emissions are balanced by removal through natural sinks or technology, so the net addition is zero. It is not zero emissions, but emissions equal removals.
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
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#净零 #碳中和