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Spatial variation in soil resistance to flowing water erosion along a regional transect in the Loess Plateau
Geng, Ren1; Zhang, Guang-hui1,2; Li, Zhen-Wei3; Wang, Hao1
2015-12-01
Source PublicationEARTH SURFACE PROCESSES AND LANDFORMS
ISSN0197-9337
Volume40Issue:15Pages:2049-2058
AbstractThe factors influencing soil erosion may vary with scale. It remains unclear whether the spatial variation in soil erosion resistance is controlled by regional variables (e.g. precipitation, temperature, and vegetation zone) or by local specific variables (e.g. soil properties, root traits, land use, and farming operations) when the study area enlarges from a hillslope or catchment to the regional scale. This study was performed to quantify the spatial variations in soil erosion resistance to flowing water under three typical land uses along a regional transect on the Loess Plateau and to identify whether regional or local specific variables are responsible for these changes. The results indicated that the measured soil detachment capacities (D-c) of cropland exhibited an irregular trend along the regional transect. The D-c of grassland increased with mean annual precipitation, except for two sites (Yijun and Erdos). The measured D-c of woodland displayed an inverted `U' shape. The changes in rill erodibility (K-r) of three land uses were similar to D-c, whereas no distinguishable trend was found for critical shear stress (tau(c)). No significant correlation was detected between D-c, K-r and tau(c), and the regional variables. The spatial variation in soil erosion resistance could be explained reasonably by changes in soil properties, root traits, land use, and farming operations, rather than regional variables. The adjustment coefficient of K-r for grassland and woodland could be well simulated by soil cohesion and root mass density (R-2 = 0.70, P<0.01), and the adjustment coefficient of critical shear stress could be estimated with aggregate stability (R-2 = 0.57, P<0.01). The results are helpful for quantifying the spatial variation in soil detachment processes by overland flow and to develop process-based erosion model at a regional scale. Copyright (c) 2015 John Wiley & Sons, Ltd.
SubtypeArticle
Keywordsoil erosion detachment process soil erosion resistance transect the Loess Plateau
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedPhysical Geography ; Geology
DOI10.1002/esp.3779
WOS KeywordDIFFERENT LAND USES ; CONCENTRATED FLOW ; OVERLAND-FLOW ; SHALLOW FLOW ; DETACHMENT CAPACITY ; AGGREGATE STABILITY ; SHEAR-STRENGTH ; GULLY EROSION ; RILL EROSION ; CHINA
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(41271287 ; State Key Laboratory Project of Earth Surface Processes and Resource Ecology(2012-ZY-02) ; Chinese Academy of Sciences ; 413121001)
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000368004400006
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/67836
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Guang-hui
Affiliation1.Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China
2.Beijing Normal Univ, Sate Key Lab Earth Surface & Ecol Resources, Beijing 100875, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Geng, Ren,Zhang, Guang-hui,Li, Zhen-Wei,et al. Spatial variation in soil resistance to flowing water erosion along a regional transect in the Loess Plateau[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2015,40(15):2049-2058.
APA Geng, Ren,Zhang, Guang-hui,Li, Zhen-Wei,&Wang, Hao.(2015).Spatial variation in soil resistance to flowing water erosion along a regional transect in the Loess Plateau.EARTH SURFACE PROCESSES AND LANDFORMS,40(15),2049-2058.
MLA Geng, Ren,et al."Spatial variation in soil resistance to flowing water erosion along a regional transect in the Loess Plateau".EARTH SURFACE PROCESSES AND LANDFORMS 40.15(2015):2049-2058.
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