中国における純炭素排出の勘定・要因・緩和策 1980–2020年
Net carbon emission accounts, drivers, and mitigation measures in China, 1980–2020 (原題)
Dongzhe Liang, Hongwei LU, Jinghang Xu, Rui Xue, Yanlong Guan, Tianci Yao, Yuli Shan
🤖 gxceed AI 要約
日本語
中国の1980〜2020年について、人為排出と陸域生態系吸収を統合した純排出量を国規模で推計した研究。純排出の増加は主に人為排出が支配し、生態系吸収は増加分の約12〜32%しか相殺していない。拡張LMDI分解とシナリオ分析により、豊かさの向上が最大の増加要因、エネルギー強度低下が最大の緩和策と判明。土地利用管理や植生吸収効率も純排出を削減したが効果は減衰した。
English
This study builds a national account of China's net CO2 emissions from 1980–2020, integrating anthropogenic emissions and terrestrial ecosystem sinks. Anthropogenic emissions dominated the long-term rise, while sinks offset only ~12–32% of the increase. Using extended LMDI decomposition and sink scenario simulations, rising affluence was the main driver and declining energy intensity the main mitigation measure; land-use management and vegetation sink efficiency also reduced net emissions but weakened over time.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
中国の純排出会計と要因分解は、日本企業のScope 3やサプライチェーン排出把握、アジア域のカーボンニュートラル政策連動を考える上で参照価値がある。SSBJ開示における削減貢献や吸収源の扱いを検討する材料にもなる。
In the global GX context
Provides a national net-emission accounting framework linking anthropogenic emissions, ecosystem sinks, and climate variability—relevant to global net-zero pathway assessment and to how disclosure regimes (ISSB/CSRD) treat removals and sink accounting. The LMDI decomposition offers a replicable method for attributing emission drivers across economies.
👥 読者別の含意
🔬研究者:国家規模の純排出会計とLMDI分解を吸収源・気候変動感応性と統合した手法は、他国の純ゼロ経路分析に応用できる。
🏢実務担当者:中国サプライヤーの排出構造やエネルギー強度改善トレンドを把握し、Scope 3管理や調達リスク評価に活用できる。
🏛政策担当者:エネルギー強度低下と土地利用管理が有効な緩和策である点は、吸収源を含む純ゼロ政策設計の参考になる。
📄 Abstract（原文）
Mitigating net CO 2 emissions under socioeconomic development and climate variability is essential for climate action and sustainable development goals. Here, focusing on anthropogenic emissions and terrestrial ecosystem sinks, we construct a national-scale account of China's net emissions from 1980 to 2020, examine their evolution, and quantify the contributions of drivers and mitigation measures. We found that anthropogenic emissions dominated the long-term increase in net emissions, while ecosystem sinks offset only ∼12–32% of the increase in anthropogenic emissions. Meanwhile, the sensitivity of ecosystem sinks to climate variability introduced interannual fluctuations in net emissions, especially through responses to irradiance and precipitation anomalies. By combining an extended Logarithmic Mean Divisia Index decomposition with scenario simulations of ecosystem sinks, we found that rising affluence was the main driver of increasing net emissions, whereas declining energy intensity was the main mitigation measure. Land-use management and vegetation-related sink efficiency generally reduced net emissions, but their contributions weakened over time. The direct climate-related effect on ecosystem sinks differed across periods and was comparable to some anthropogenic drivers. By linking anthropogenic emissions, ecosystem sinks, and climate variability over four decades, this study provides a basis for assessing net-zero pathways under socioeconomic development and climate variability.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.gloenvcha.2026.103244first seen 2026-10-17 04:49:54
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