气候变化领域集成服务门户(CCPortal): A large but transient carbon sink from urbanization and rural depopulation in China

CCPortal

DOI	10.1038/s41893-021-00843-y
	A large but transient carbon sink from urbanization and rural depopulation in China
	Zhang, Xiaoxin; Brandt, Martin; Tong, Xiaowei; Ciais, Philippe; Yue, Yuemin; Xiao, Xiangming; Zhang, Wenmin; Wang, Kelin; Fensholt, Rasmus
发表日期	2022
ISSN	2398-9629
起始页码	321
结束页码	+
卷号	5 期号:4 页码:15
英文摘要	China has pledged to achieve carbon neutrality by 2060 but policies favouring urbanization could slow down progress. This study tests the hypothesis that urbanization and carbon neutrality are not mutually exclusive and that sustainably managed urbanization could increase carbon sequestration, especially in rural areas. China has experienced unprecedented urbanization and associated rural depopulation during recent decades alongside a massive increase in the total population. By using satellite and demographical datasets, we here test the hypothesis that urbanization and carbon neutrality are not mutually exclusive and that sustainably managed urbanization may even be an integral part of the pathway to reduce atmospheric CO2. We show that, although urban expansion caused an initial aboveground carbon loss of -0.02 PgC during 2002-2010, urban greening compensates these original losses with an overall balance of +0.03 PgC in urban areas during 2002-2019. We further show that a maximum increase in aboveground carbon stocks was observed at intermediate distances to rural settlements (2-4 km), reflecting the decreased pressure on natural resources. Consequently, rural areas experiencing depopulation (-14 million people yr(-1)) coincided with an extensive aboveground carbon sink of 0.28 +/- 0.05 PgC yr(-1) during 2002-2019, while at the same time only a slight decline in cropland areas (4%) was observed. However, tree cover growth saturation limits the carbon removal capacity of forests and only a decrease in CO2 emissions from fossil fuel burning will make the aim of carbon neutrality achievable.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000752254100001
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272879
作者单位	University of Copenhagen; UDICE-French Research Universities; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); Chinese Academy of Sciences; Institute of Subtropical Agriculture, CAS; Chinese Academy of Sciences; University of Oklahoma System; University of Oklahoma - Norman
推荐引用方式 GB/T 7714	Zhang, Xiaoxin,Brandt, Martin,Tong, Xiaowei,et al. A large but transient carbon sink from urbanization and rural depopulation in China[J],2022,5(4):15.
APA	Zhang, Xiaoxin.,Brandt, Martin.,Tong, Xiaowei.,Ciais, Philippe.,Yue, Yuemin.,...&Fensholt, Rasmus.(2022).A large but transient carbon sink from urbanization and rural depopulation in China.NATURE SUSTAINABILITY,5(4),15.
MLA	Zhang, Xiaoxin,et al."A large but transient carbon sink from urbanization and rural depopulation in China".NATURE SUSTAINABILITY 5.4(2022):15.