气候变化领域集成服务门户(CCPortal): Perspectives on the role of terrestrial ecosystems in the 'carbon neutrality' strategy

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DOI	10.1007/s11430-022-9926-6
	Perspectives on the role of terrestrial ecosystems in the 'carbon neutrality' strategy
	Piao, Shilong; Yue, Chao; Ding, Jinzhi; Guo, Zhengtang
通讯作者	Piao, SL (通讯作者)
发表日期	2022
ISSN	1674-7313
EISSN	1869-1897
起始页码	1178
结束页码	1186
卷号	65 期号:6
英文摘要	The Chinese government has made a strategic decision to reach 'carbon neutrality' before 2060. China's terrestrial ecosystem carbon sink is currently offsetting 7-15% of national anthropogenic emissions and has received widespread attention regarding its role in the 'carbon neutrality' strategy. We provide perspectives on this question by inferring from the fundamental principles of terrestrial ecosystem carbon cycles. We first elucidate the basic ecological theory that, over the long-term succession of ecosystem without regenerative disturbances, the carbon sink of a given ecosystem will inevitably approach zero as the ecosystem reaches its equilibrium state or climax. In this sense, we argue that the currently observed global terrestrial carbon sink largely emerges from the processes of carbon uptake and release of ecosystem responding to environmental changes and, as such, the carbon sink is never an intrinsic ecosystem function. We further elaborate on the long-term effects of atmospheric CO2 changes and afforestation on China's terrestrial carbon sink: the enhancement of the terrestrial carbon sink by the CO2 fertilization effect will diminish as the growth of the atmospheric CO2 slows down, or completely stops, depending on international efforts to combat climate change, and carbon sinks induced by ecological engineering, such as afforestation, will also decline as forest ecosystems become mature and reach their late-successional stage. We conclude that terrestrial ecosystems have nonetheless an important role to play to gain time for industrial emission reduction during the implementation of the 'carbon neutrality' strategy. In addition, science-based ecological engineering measures including afforestation and forest management could be used to elongate the time of ecosystem carbon sink service. We propose that the terrestrial carbon sink pathway should be optimized, by addressing the questions of 'when' and 'where' to plan afforestation projects, in order to effectively strengthen the terrestrial ecosystem carbon sink and maximize its contribution to the realization of the 'carbon neutrality' strategy.
关键词	GREENING TREND CHINA CO2 SEQUESTRATION VEGETATION SENSITIVITY NITROGEN CYCLE
英文关键词	Carbon neutrality; Terrestrial ecosystem carbon sink; CO2 fertilization effect; Afforestation; Carbon sink pathway
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000788970100001
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260670
推荐引用方式 GB/T 7714	Piao, Shilong,Yue, Chao,Ding, Jinzhi,et al. Perspectives on the role of terrestrial ecosystems in the 'carbon neutrality' strategy[J]. 中国科学院青藏高原研究所,2022,65(6).
APA	Piao, Shilong,Yue, Chao,Ding, Jinzhi,&Guo, Zhengtang.(2022).Perspectives on the role of terrestrial ecosystems in the 'carbon neutrality' strategy.SCIENCE CHINA-EARTH SCIENCES,65(6).
MLA	Piao, Shilong,et al."Perspectives on the role of terrestrial ecosystems in the 'carbon neutrality' strategy".SCIENCE CHINA-EARTH SCIENCES 65.6(2022).