Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion

doi:10.1016/j.ecolind.2020.106281

	Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion
	Xu, Erqi; Zhang, Hongqi
刊名	ECOLOGICAL INDICATORS
	2020-06-01
卷号	113 页码:14
关键词	Soil erosion Multiple indicators Contribution importance Interacted impact Rainfall change Human activity
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2020.106281
通讯作者	Xu, Erqi(xueq@igsnrr.ac.cn) ; Zhang, Hongqi(zhanghq@igsnrr.ac.cn)
英文摘要	Soil erosion causes fertility loss and land degradation, threatening food security and environmental quality. Understanding the spatial relationship and joint impact of factors on the water-related soil erosion can help combat erosion. Change pathway and intersection of trigger factors, key metrics for determining the soil erosion aggravation or improvement, remain unclear and limited in the quantification in previous researches. To solve this problem, this study performed a spatially statistical exploration by using multiple models. Taking the Yili region as the case-study area, the field soil survey, remote sensing inversion and modified Revised Universal Soil Loss Equation were used to estimate the soil erosion in 1990 and 2015. Then, a spatial analysis model was used to quantify the relative importance of multiple indicators and mutual interactions in the soil erosion. The spatial distribution of soil erosion was shown to be basically related to topography with the largest importance in Yili region. Importance of land use, rainfall, and soil changes along with the rugged topography influencing the soil erosion evolution decreased successively. The largest interacted impact was found in the topography with a non-linear enhancement with vegetation factor. The decrease in soil erosion cannot be explained by the increase in rainfall erosivity, but it is likely to the result of land-use changes, reflected in the improvement of the vegetation cover and management factor and erosion control practice factor within the sloping areas. Examining the spatial consistency and intersection of triggering factors, it implied that reasonably reclaiming the desert grassland with the soil improvement and biomass accumulation would mitigate the soil erosion in the Yili region. Our study demonstrated that quantifying the importance for the different pathways of changing factors and their intersection would provide a better understanding and new insight into the soil erosion process.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040305] ; National Natural Science Foundation of China[41601095]
WOS关键词	SEDIMENT YIELD ; LOESS PLATEAU ; ORGANIC-CARBON ; COVER CHANGE ; VEGETATION ; RISK ; BASIN ; RUSLE ; TOPOGRAPHY ; DYNAMICS
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523335900023
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133306]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Erqi; Zhang, Hongqi
作者单位	Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Xu, Erqi,Zhang, Hongqi. Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion[J]. ECOLOGICAL INDICATORS,2020,113:14.
APA	Xu, Erqi,&Zhang, Hongqi.(2020).Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion.ECOLOGICAL INDICATORS,113,14.
MLA	Xu, Erqi,et al."Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion".ECOLOGICAL INDICATORS 113(2020):14.