Estimating soil organic carbon redistribution in three major river basins of China based on erosion processes

doi:10.1071/SR19325

	Estimating soil organic carbon redistribution in three major river basins of China based on erosion processes
	Yang, Yan 4,5; Zhu, Qiuan 4; Liu, Jinxun 6; Li, Mingxu 5; Yuan, Minshu 2; Chen, Huai 3; Peng, Changhui 1,3; Yang, Zhenan 1
刊名	SOIL RESEARCH
	2020-07-08
页码	11
关键词	Pearl River soil organic carbon USPED water erosion Yangtze River Yellow River
ISSN号	1838-675X
DOI	10.1071/SR19325
通讯作者	Zhu, Qiuan(qiuan.zhu@gmail.com)
英文摘要	Soil erosion by water affects soil organic carbon (SOC) migration and distribution, which are important processes for defining ecosystem carbon sources and sinks. Little has been done to quantify soil carbon erosion in the three major basins in China, the Yangtze River, Yellow River and Pearl River Basins, which contain the most eroded areas. This research attempts to quantify the lateral movement of SOC based on spatial and temporal patterns of water erosion rates derived from an empirical Unit Stream Power Erosion Deposition Model (USPED) model. The water erosion rates simulated by the USPED model agreed reasonably with observations (R-2= 0.43,P< 0.01). We showed that regional water erosion ranged within 23.3-50 Mg ha(-1)year(-1)during 1992-2013, inducing the lateral redistribution of SOC caused by erosion in the range of 0.027-0.049 Mg C ha(-1)year(-1), and that caused by deposition of 0.0079-0.015 Mg C ha(-1)year(-1), in the three basins. The total eroded SOC was 0.006, 0.002 and 0.001 Pg year(-1)in the Yangtze River, Yellow River and Pearl River Basins respectively. The net eroded SOC in the three basins was similar to 0.0075 Pg C year(-1). Overall, the annual average redistributed SOC rate caused by erosion was greater than that caused by deposition, and the SOC loss in the Yangtze River Basin was greatest among the three basins. Our study suggests that considering both processes of erosion and deposition - as well as effects of topography, rainfall, land use types and their interactions - on these processes are important to understand SOC redistribution caused by water erosion.
资助项目	Second Tibetan Plateau Scientific Expedition[2019QZKK0304] ; National Key R&D Program of China[2016YFC0500203] ; Fundamental Research Funds for the Central Universities[2019B04714]
WOS关键词	LAND-USE CHANGE ; SEDIMENT TRANSPORT ; WATER EROSION ; CLIMATE-CHANGE ; LOESS PLATEAU ; RUNOFF ; DEPOSITION ; FOREST ; IMPACT ; MATTER
WOS研究方向	Agriculture
语种	英语
出版者	CSIRO PUBLISHING
WOS记录号	WOS:000546144900001
资助机构	Second Tibetan Plateau Scientific Expedition ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162428]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhu, Qiuan
作者单位	1.Univ Quebec Montreal, Dept Biol Sci, Inst Environm Sci, Case Postale 8888,Succursale Ctr Ville, Montreal, PQ H3C 3P8, Canada 2.Northwest A&F Univ, Coll Forestry, Ctr Ecol Forecasting & Global Change, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat &, Chengdu 610041, Peoples R China 4.Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 6.US Geol Survey, Western Geog Sci Ctr, Menlo Pk, CA 94025 USA
推荐引用方式 GB/T 7714	Yang, Yan,Zhu, Qiuan,Liu, Jinxun,et al. Estimating soil organic carbon redistribution in three major river basins of China based on erosion processes[J]. SOIL RESEARCH,2020:11.
APA	Yang, Yan.,Zhu, Qiuan.,Liu, Jinxun.,Li, Mingxu.,Yuan, Minshu.,...&Yang, Zhenan.(2020).Estimating soil organic carbon redistribution in three major river basins of China based on erosion processes.SOIL RESEARCH,11.
MLA	Yang, Yan,et al."Estimating soil organic carbon redistribution in three major river basins of China based on erosion processes".SOIL RESEARCH (2020):11.