气候变化领域集成服务门户(CCPortal): Divergent responses of soil organic carbon to afforestation

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DOI	10.1038/s41893-020-0557-y
	Divergent responses of soil organic carbon to afforestation
	Hong S.; Yin G.; Piao S.; Dybzinski R.; Cong N.; Li X.; Wang K.; Peñuelas J.; Zeng H.; Chen A.
发表日期	2020
ISSN	2398-9629
起始页码	694
结束页码	700
卷号	3 期号:9
英文摘要	Large-scale afforestation is regarded as an effective natural climate solution. However, afforestation-induced changes in soil organic C (SOC) are poorly quantified due to the paucity of large-scale sampling data. Here, we provide the first comprehensive assessment of the afforestation impact on SOC stocks with a pairwise comparative study of samples from 619 control-and-afforested plot pairs in northern China. We found context-dependent effects of afforestation on SOC: afforestation increases SOC density (SOCD) in C-poor soils but decreases SOCD in C-rich soils, especially in deeper soil. Thus, the fixed biomass/SOC ratio assumed in previous studies could overestimate the SOC enhancement by afforestation. By extrapolating the sampling data to the entire region, we estimate that afforestation increased SOC stocks in northern China by only 234.9 ± 9.6 TgC over the last three decades. The study highlights the importance of including pre-afforestation soil properties in models of soil carbon dynamics and carbon sink projections. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Organic carbon; Soils; Comparative studies; Comprehensive assessment; Context dependent; Large-scale afforestation; Northern China; Soil carbon dynamics; Soil organic C; Soil organic carbon; Reforestation
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/163248
作者单位	Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China; College of Water Sciences, Beijing Normal University, Beijing, China; Key Laboratory of Alpine Ecology, Center for Excellence in Tibetan Earth Science, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Institute of Environmental Sustainability, Loyola University Chicago, Chicago, IL, United States; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; CREAF, Barcelona, Spain; Global Ecology Unit CREAF-CSIC-UAB, Barcelona, Spain; Peking University Shenzhen Graduate School, Shenzhen, China; Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Hong S.,Yin G.,Piao S.,et al. Divergent responses of soil organic carbon to afforestation[J],2020,3(9).
APA	Hong S..,Yin G..,Piao S..,Dybzinski R..,Cong N..,...&Chen A..(2020).Divergent responses of soil organic carbon to afforestation.Nature Sustainability,3(9).
MLA	Hong S.,et al."Divergent responses of soil organic carbon to afforestation".Nature Sustainability 3.9(2020).