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[1]ZHANG Rui,CAO Hua,WANG Yun-qiang,et al.Spatial Variability of Soil Moisture and Its Influence Factors in Watershed of Gully Region on the Loess Plateau[J].Research of Soil and Water Conservation,2012,19(05):52-58.

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Spatial Variability of Soil Moisture and Its Influence Factors in Watershed of Gully Region on the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 05 Page number: 52-58 Column: Public date: 2012-10-20

Title:: Spatial Variability of Soil Moisture and Its Influence Factors in Watershed of Gully Region on the Loess Plateau

Author(s):: ZHANG Rui^1,3, CAO Hua², WANG Yun-qiang¹, HUANG Chuan-qin¹, TAN Wen-feng^1,2; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau/Institute of Soil and Water Conservation, CAS and MWR, Yangling, Shaanxi 712100, China;
2. College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China;
3. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Keywords:: watershed in gully region of Loess Plateau; land use; topography; soil moisture; spatial variability

CLC:: S152.7

DOI:: -

Abstract:: To elucidate the quantitative characteristics and variation pattern of soil moisture in different land uses and terrain conditions, classical statistics were used to analyze the spatial variability of soil moisture in small watershed in the gully region of the Loess Plateau. The results indicated that the differences of average soil moisture among different land uses reached the extremely remarkable level, which showed as the order of farm land > grass land > forest land > shrub land. Soil moisture in profiles decreased firstly and then increased. Soil moisture was significantly affected by terrain conditions, which performed as terrace > gully bottom > slope land > the top of hills. Soil moisture was the highest at down slope, next was at up slope, and the lowest was observed at middle slope. Soil moisture on the shady slope was higher than that on the sunny slope. Different land uses and terrain conditions had a significant interaction in terms of soil moisture at the small watershed scale. The results obtained above can provide evidence for soil water management, optimization of land use structure and vegetation deployment in different terrain condition.

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