Determinants of soil organic carbon sequestration and its contribution to ecosystem carbon sinks of planted forests

doi:10.1111/gcb.15036

	Determinants of soil organic carbon sequestration and its contribution to ecosystem carbon sinks of planted forests
	Wang, Shiqiang 1; Huang, Yao1
	2020
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	26 期号:5 页码:3163-3173
摘要	The area of forest established through afforestation/reforestation has been increasing on a global scale, which is particularly important as these planted forests attenuate climate change by sequestering carbon. However, the determinants of soil organic carbon (SOC) sequestration and their contribution to the ecosystem carbon sink of planted forests remain uncertain. By using globally distributed data extracted from 154 peer-reviewed publications and a total of 355 sampling points, we investigated above-ground biomass carbon (ABC) sequestration and SOC sequestration across three different climatic zones (tropical, warm temperate, and cold temperate) through correlation analysis, regression models, and structural equation modeling (SEM). We found that the proportion of SOC sequestration in the ecosystem C sequestration averaged 14.1% globally, being the highest (27.0%) in the warm temperate and the lowest (10.7%) in the tropical climatic zones. The proportion was mainly affected by latitude. The sink rate of ABC (R-ABC) in tropical climates (2.48 Mg C ha(-1) year(-1)) and the sink rate of SOC (R-SOC) in warm temperate climates (0.96 Mg C ha(-1) year(-1)) were higher than other climatic zones. The main determinants of R-SOC were the number of frost-free days, latitude, mean annual precipitation (MAP), and SOC density (SOCD) at the initial observation; however, these variables depended on the climatic zone. According to the SEM, frost-free period, mean annual temperature (MAT) and MAP are the dominant driving factors affecting R-SOC in Chinese plantations. MAT has a positive effect on R-SOC, and global warming may increase R-SOC of temperate plantations in China. Our findings highlight the determinants of SOC sequestration and quantitatively reveal the substantial global contribution of SOC sequestration to ecosystem carbon sink provided by planted forests. Our results help managers identify and control key factors to increase carbon sequestration in forest ecosystems.
关键词	above-ground biomass afforestation environmental factors frost-free period soil organic carbon accumulate rate structural equation modeling (SEM)
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.15036
收录类别	SCI
语种	英语
WOS关键词	LAND-USE CHANGE ; BIOMASS CARBON ; CLIMATE-CHANGE ; MICROBIAL BIOMASS ; AGRICULTURAL LAND ; MANAGING FORESTS ; NITROGEN STOCKS ; AGE-SEQUENCE ; AFFORESTATION ; STORAGE
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS记录号	WOS:000526102300034
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41871038] Funding Source: Medline ; National Key R&amp ; D Program of China [2017YFC0503905] Funding Source: Medline
作者邮箱	huangyao@ibcas.ac.cn
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/21806
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shiqiang,Huang, Yao. Determinants of soil organic carbon sequestration and its contribution to ecosystem carbon sinks of planted forests[J]. GLOBAL CHANGE BIOLOGY,2020,26(5):3163-3173.
APA	Wang, Shiqiang,&Huang, Yao.(2020).Determinants of soil organic carbon sequestration and its contribution to ecosystem carbon sinks of planted forests.GLOBAL CHANGE BIOLOGY,26(5),3163-3173.
MLA	Wang, Shiqiang,et al."Determinants of soil organic carbon sequestration and its contribution to ecosystem carbon sinks of planted forests".GLOBAL CHANGE BIOLOGY 26.5(2020):3163-3173.

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