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[1]MO Bin,CHEN Xiaoyan,YANG Yicui,et al.Research on Soil Infiltration Capacity and Its Influencing Factors in Different Land Uses[J].Research of Soil and Water Conservation,2016,23(01):13-17.

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Research on Soil Infiltration Capacity and Its Influencing Factors in Different Land Uses

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 01 Page number: 13-17 Column: Public date: 2016-02-28

Title:: Research on Soil Infiltration Capacity and Its Influencing Factors in Different Land Uses

Author(s):: MO Bin¹, CHEN Xiaoyan^2,3, YANG Yicui¹, LUO Banglin², TANG Ju², GONG Chunming⁴, LIN Zhihang¹, ZHOU Tujin¹, SHEN Yunkang¹; 1. Guangxi Communication Planning Surveying and Designing Institute, Nanning, Guangxi 530000, China;
2. Key Laboratory of Ecoenvironments in Three Gorges Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400716, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China

Keywords:: soil infiltration capacity; point-source infiltration method; different land uses; soil physicochemical properties; correlation

CLC:: S152.7

DOI:: -

Abstract:: Soil infiltration capacity is the hotspot topic of soil erosion studies, and soil physicochemical properties have great influence on it. A new infiltration method, point-source infiltration method, was used to precisely evaluate the infiltration capacity in different purple soil land uses. And correlation analysis on soil physicochemical properties and soil infiltration capacity of different land uses was performed. Results showed that: (1) there is a large difference among soil physicochemical properties in different land uses, soil water content, non-capillary porosity, capillary porosity, content of > 0.25 mm aggregate and organic matter content in the topsoil are greater than those in the subsoil; (2) soil infiltration capacity showed differences among different land uses. Land uses showed great effects, in general, initial infiltration rate and average infiltration rate decreased in the order: woodland slope > slope cropland > grassland, steady infiltration rates decreased in the order: slope cropland > woodland > grassland, and the time reaching stable state decreased in the order: slope cropland > woodland > grassland; (3) correlation analysis showed that there was a significantly positive correlation between initial infiltration rate and wet sieve MWD value and structure damage rate, and it had a significantly negative correlation with capillary porosity; (4) steady infiltration rate and non-capillary porosity showed the significantly positive correlation, and it had a significantly negative correlation with the soil bulk density; (5) the average infiltration rate and non-capillary porosity and structure damage rate showed a positive correlation, and the correlation coefficient is large, and there was a negative correlation between average infiltration rate and soil bulk density and capillary porosity, the absolute value of correlation coefficient is relatively large. The results of this research can provide the theoretical basis for soil infiltration study in purple soil area.

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