气候变化领域集成服务门户(CCPortal): Carbon fluxes of China's coastal wetlands and impacts of reclamation and restoration

CCPortal

DOI	10.1111/gcb.17280
	Carbon fluxes of China's coastal wetlands and impacts of reclamation and restoration
	Lu, Weizhi; Xiao, Jingfeng; Gao, Haiqiang; Jia, Qingyu; Li, Zhengjie; Liang, Jie; Xing, Qinghui; Mao, Dehua; Li, Hong; Chu, Xiaojing; Chen, Hui; Guo, Haiqiang; Han, Guangxuan; Zhao, Bin; Chen, Luzhen; Lai, Derrick Y. F.; Liu, Shuguang; Lin, Guanghui
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	4
卷号	30 期号:4
英文摘要	Coastal wetlands play an important role in regulating atmospheric carbon dioxide (CO2) concentrations and contribute significantly to climate change mitigation. However, climate change, reclamation, and restoration have been causing substantial changes in coastal wetland areas and carbon exchange in China during recent decades. Here we compiled a carbon flux database consisting of 15 coastal wetland sites to assess the magnitude, patterns, and drivers of carbon fluxes and to compare fluxes among contrasting natural, disturbed, and restored wetlands. The natural coastal wetlands have the average net ecosystem exchange of CO2 (NEE) of -577 g C m(-2) year(-1), with -821 g C m(-2) year(-1) for mangrove forests and -430 g C m(-2) year(-1) for salt marshes. There are pronounced latitudinal patterns for carbon dioxide exchange of natural coastal wetlands: NEE increased whereas gross primary production (GPP) and respiration of ecosystem decreased with increasing latitude. Distinct environmental factors drive annual variations of GPP between mangroves and salt marshes; temperature was the dominant controlling factor in salt marshes, while temperature, precipitation, and solar radiation were co-dominant in mangroves. Meanwhile, both anthropogenic reclamation and restoration had substantial effects on coastal wetland carbon fluxes, and the effect of the anthropogenic perturbation in mangroves was more extensive than that in salt marshes. Furthermore, from 1980 to 2020, anthropogenic reclamation of China's coastal wetlands caused a carbon loss of similar to 3720 Gg C, while the mangrove restoration project during the period of 2021-2025 may switch restored coastal wetlands from a carbon source to carbon sink with a net carbon gain of 73 Gg C. The comparison of carbon fluxes among these coastal wetlands can improve our understanding of how anthropogenic perturbation can affect the potentials of coastal blue carbon in China, which has implications for informing conservation and restoration strategies and efforts of coastal wetlands.
英文关键词	blue carbon; carbon budget; carbon dioxide flux; coastal wetland; land-use change; reclamation; restoration
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001208991400009
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/287581
作者单位	Central South University of Forestry & Technology; Central South University of Forestry & Technology; University System Of New Hampshire; University of New Hampshire; China Meteorological Administration; Tsinghua University; National Marine Environmental Monitoring Center; Chinese Academy of Sciences; Northeast Institute of Geography & Agroecology, CAS; Fudan University; Fudan University; Chinese Academy of Sciences; Yantai Institute of Coastal Zone Research, CAS; Yangtze University; Xiamen University; Chinese University of Hong Kong; Chinese University of Hong Kong; Tsinghua University
推荐引用方式 GB/T 7714	Lu, Weizhi,Xiao, Jingfeng,Gao, Haiqiang,et al. Carbon fluxes of China's coastal wetlands and impacts of reclamation and restoration[J],2024,30(4).
APA	Lu, Weizhi.,Xiao, Jingfeng.,Gao, Haiqiang.,Jia, Qingyu.,Li, Zhengjie.,...&Lin, Guanghui.(2024).Carbon fluxes of China's coastal wetlands and impacts of reclamation and restoration.GLOBAL CHANGE BIOLOGY,30(4).
MLA	Lu, Weizhi,et al."Carbon fluxes of China's coastal wetlands and impacts of reclamation and restoration".GLOBAL CHANGE BIOLOGY 30.4(2024).