Factors Affecting the Spatial and Temporal Variations in Soil Erodibility of China

doi:10.1029/2018JF004918

	Factors Affecting the Spatial and Temporal Variations in Soil Erodibility of China
	Zhu, Guangyu 1; Tang, Zhuangsheng 1; Shangguan, Zhouping 1,2; Peng, Changhui 1,3; Deng, Lei 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
	2019-03-01
卷号	124 期号:3 页码:737-749
关键词	climate land use types vegetation restoration soil erosion soil nitrogen topography
ISSN号	2169-9003
DOI	10.1029/2018JF004918
通讯作者	Deng, Lei(leideng@ms.iswc.ac.cn)
英文摘要	Soil erosion occurs extensively across China, leading to severe degradation of the land and ecosystem services. However, the spatial and temporal variations in soil erodibility (k) and the distribution of soil erosion across land use types and slopes remain unclear. We synthesized the results from 325 sites published in 152 literatures to analyze the factors affecting the k, such as land use type, climate, topography, soil, and vegetation restoration age. The results showed that areas with slopes >25 degrees had a larger k factor (k=0.1047) than did those with slope <6 degrees (k=0.0637) or 6-25 degrees (k=0.0832). The k from 2006 to 2011 (k=0.0725) was higher than that from 1999 to 2005 (k=0.058) and that from 2012 to 2016 (k=0.0631). The k value initially increased with vegetation restoration age and then gradually decreased. Land use also had an impact on the k factor, with the k factor of cropland (k=0.0697) being higher than that of grassland (k=0.0663) but lower than that of forest (k=0.0967). Across China, North Shaanxi, Heilongjiang, and South Guizhou, which are located in the Loess Plateau in Northwest China, the Black Soil region of Northeast China, and the Karst areas in Southwest China, respectively, were the three most severely eroded regions due to hydraulic erosion, frost-thaw erosion, and high-intensity erosion, respectively. Overall, the most important factors affecting the k were soil characteristics, followed by topography and climate. Among them, soil nitrogen and precipitation were the two most critical factors influencing the k.
资助项目	National Key Research and Development Program of China[2016YFC0500203] ; National Key Research and Development Program of China[2016YFC0501605] ; National Natural Science Foundation of China[41877538] ; National Key Technology RD Program[2015BAC01B03] ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province in China ; Funding of Promoting Plan to Creative Talents of Youth Science and Technology Star in Shaanxi Province of China[2018KJXX-088]
WOS关键词	LAND-USE CHANGE ; LOESS PLATEAU ; EROSION RISK ; AGGREGATE STABILITY ; PHYSICAL-PROPERTIES ; ORGANIC-MATTER ; SURFACE RUNOFF ; CLIMATE-CHANGE ; PLANT-GROWTH ; K-FACTOR
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000463993300005
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Key Technology RD Program ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province in China ; Funding of Promoting Plan to Creative Talents of Youth Science and Technology Star in Shaanxi Province of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/48240]
专题	中国科学院地理科学与资源研究所
通讯作者	Deng, Lei
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 3.Univ Quebec Montreal, Dept Biol Sci, Ctr CEF, ESCER, Montreal, PQ, Canada
推荐引用方式 GB/T 7714	Zhu, Guangyu,Tang, Zhuangsheng,Shangguan, Zhouping,et al. Factors Affecting the Spatial and Temporal Variations in Soil Erodibility of China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,2019,124(3):737-749.
APA	Zhu, Guangyu,Tang, Zhuangsheng,Shangguan, Zhouping,Peng, Changhui,&Deng, Lei.(2019).Factors Affecting the Spatial and Temporal Variations in Soil Erodibility of China.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,124(3),737-749.
MLA	Zhu, Guangyu,et al."Factors Affecting the Spatial and Temporal Variations in Soil Erodibility of China".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 124.3(2019):737-749.