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Change pathway and intersection of rainfall, soil, and land use influencing water-related soil erosion
Xu, Erqi; Zhang, Hongqi
2020-06-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume113Pages:14
Corresponding AuthorXu, Erqi(xueq@igsnrr.ac.cn) ; Zhang, Hongqi(zhanghq@igsnrr.ac.cn)
AbstractSoil 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.
KeywordSoil erosion Multiple indicators Contribution importance Interacted impact Rainfall change Human activity
DOI10.1016/j.ecolind.2020.106281
WOS KeywordSEDIMENT YIELD ; LOESS PLATEAU ; ORGANIC-CARBON ; COVER CHANGE ; VEGETATION ; RISK ; BASIN ; RUSLE ; TOPOGRAPHY ; DYNAMICS
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA19040305] ; National Natural Science Foundation of China[41601095]
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000523335900023
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/133307
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Erqi; Zhang, Hongqi
AffiliationChinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
Recommended Citation
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.
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