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

CCPortal

DOI	10.1038/s41893-020-0557-y
	Divergent responses of soil organic carbon to afforestation
	Hong, Songbai; Yin, Guodong; Piao, Shilong; Dybzinski, Ray; Cong, Nan; Li, Xiangyi; Wang, Kai; Penuelas, Josep; Zeng, Hui; Chen, Anping
通讯作者	Piao, SL (通讯作者)
发表日期	2020
ISSN	2398-9629
起始页码	694
结束页码	+
卷号	3 期号:9
英文摘要	Forest planting is considered a natural climate solution, but effects on soil carbon are unclear. This study, in northern China, finds that planting forests increases carbon in soils poor in it and vice versa. 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.
关键词	LAND-USE CHANGE CHINA FOREST SEQUESTRATION STOCKS STORAGE IMPACT
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS记录号	WOS:000542089900001
来源期刊	NATURE SUSTAINABILITY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260090
推荐引用方式 GB/T 7714	Hong, Songbai,Yin, Guodong,Piao, Shilong,et al. Divergent responses of soil organic carbon to afforestation[J]. 中国科学院青藏高原研究所,2020,3(9).
APA	Hong, Songbai.,Yin, Guodong.,Piao, Shilong.,Dybzinski, Ray.,Cong, Nan.,...&Chen, Anping.(2020).Divergent responses of soil organic carbon to afforestation.NATURE SUSTAINABILITY,3(9).
MLA	Hong, Songbai,et al."Divergent responses of soil organic carbon to afforestation".NATURE SUSTAINABILITY 3.9(2020).