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Spatial analysis of soil aggregate stability in a small catchment of the Loess Plateau, China: I. Spatial variability

文献类型：期刊论文

作者Huang Deng1; Luping Ye2,3; Wenfeng Tan2,3; Linchuan Fang2,3; Lingling Ji1; 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.
刊名SOIL & TILLAGE RESEARCH
出版日期2018
卷号179页码:71-81
关键词Soil Aggregate Stability Soil Erodibility Spatial Analysis
ISSN号0167-1987
DOI10.1016/j.still.2018.01.012
文献子类Article
英文摘要The 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.
学科主题Agriculture
出版地PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种英语
WOS记录号WOS:000428832300009
出版者ELSEVIER SCIENCE BV
资助机构National 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] ; National 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]
源URL[http://ir.iswc.ac.cn/handle/361005/8246]  
专题水保所科研产出--SCI_2018--SCI
通讯作者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.
作者单位1.Huazhong Agr Univ, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
3.Minist Water Resources, Yangling 712100, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Huang Deng,Luping Ye,Wenfeng Tan,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 Huang Deng,Luping Ye,Wenfeng Tan,Linchuan Fang,Lingling Ji,&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 Huang Deng,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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来源：水土保持研究所

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