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Spatial analysis of soil aggregate stability in a small catchment of the Loess Plateau, China: I. Spatial variability
Luping Ye1,2; Wenfeng Tan1,2; Linchuan Fang1,2; Lingling Ji3; Huang Deng3; Tan, WF (reprint author), Huazhong Agr Univ, Coll Resources & Environm, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Hubei, Peoples R China.
SubtypeArticle
2018
Source PublicationSOIL & TILLAGE RESEARCH
ISSN0167-1987
description.correspondentemailyeluping1991@yahoo.com ; wenfeng.tan@hotmail.com ; jilingling_2015@hotmail.com ; denghuang@webmail.hzau.edu.cn
Volume179Pages:71-81
AbstractThe intrinsic and extrinsic factors that control soil aggregate formation have been widely studied at the aggregate scale, but little is known about their roles in aggregate formation at different landscape scales. Here, a spatial analysis of soil aggregate stability and erodibility (K factors) was performed to understand the formation processes of aggregates at catchment scale. Spatial structures of the mean weight-diameter (MWD, mm), water stable aggregates greater than 0.25 mm (WSA(>0.25), %) and K factors were investigated by using classical statistics, semivariograms, Local Indicators of Spatial Association (LISA), spatial interpretation, and spatial overlay in a small catchment of the Loess Plateau, China (LPC). The results showed that MWD and WSA(>0.25) were significantly lower in farmland than in other land types, and were obviously higher in shrubland than in woodland, but it was the opposite case for K factors. Nugget/sill ratios C-0/(C-0 + C) showed a very strong spatial dependence for MWD (9.13% at 0-10 cm and 19.49% at 10-20 cm soil layer) and WSA(>0.25) (12.48% at 0-10 cm and 17.71% at 10-20 cm soil layer). These data and LISA results implied that the spatial variability of MWD, WSA(>0.25) and K factors in the Zhifanggou catchment was mainly controlled by intrinsic factors such as parent materials, terrain attributes and soil types. Besides, the effects of extrinsic factors (land use and farming practice) could not be ignored, especially for K factors. Cross-validation results illustrated that ordinary kriging (OK) performed better than inverse distance weighting (IDW) for MWD and WSA(>0.25), but it was the opposite for K factors as a whole. Land-use type, topography, vegetation, and revegetation duration showed interactive effects on the spatial heterogeneity of soil aggregate stability and K factors. Spatial analysis showed great potential to be applied in the analysis of the influencing factors of soil aggregate stability at the small catchment scale.
KeywordSoil Aggregate Stability Soil Erodibility Spatial Analysis
Subject AreaAgriculture
DOI10.1016/j.still.2018.01.012
Indexed BySCI
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language英语
WOS IDWOS:000428832300009
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China [41330852] ; National Natural Science Foundation of China [41330852] ; National Key Basic Research Program of China [2015CB150504] ; National Key Basic Research Program of China [2015CB150504]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8246
Collection水保所科研产出--SCI_2018--SCI
Corresponding AuthorTan, WF (reprint author), Huazhong Agr Univ, Coll Resources & Environm, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Hubei, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
2.Minist Water Resources, Yangling 712100, Peoples R China
3.Huazhong Agr Univ, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Hubei, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Luping Ye,Wenfeng Tan,Linchuan Fang,et al. Spatial analysis of soil aggregate stability in a small catchment of the Loess Plateau, China: I. Spatial variability[J]. SOIL & TILLAGE RESEARCH,2018,179:71-81.
APA Luping Ye,Wenfeng Tan,Linchuan Fang,Lingling Ji,Huang Deng,&Tan, WF .(2018).Spatial analysis of soil aggregate stability in a small catchment of the Loess Plateau, China: I. Spatial variability.SOIL & TILLAGE RESEARCH,179,71-81.
MLA Luping Ye,et al."Spatial analysis of soil aggregate stability in a small catchment of the Loess Plateau, China: I. Spatial variability".SOIL & TILLAGE RESEARCH 179(2018):71-81.
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