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DOI10.1038/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
ISSN2398-9629
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
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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).
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