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[1]XU Guo-ce,LI Zhan-bin,WANG Li-jun,et al.Profile Distribution of Soil Properties on Sloping Cropland in Small Yingwugou Watershed of the Dan River Basin[J].Research of Soil and Water Conservation,2013,20(02):9-14.

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Profile Distribution of Soil Properties on Sloping Cropland in Small Yingwugou Watershed of the Dan River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 02 Page number: 9-14 Column: Public date: 2013-04-28

Title:: Profile Distribution of Soil Properties on Sloping Cropland in Small Yingwugou Watershed of the Dan River Basin

Author(s):: XU Guo-ce¹, LI Zhan-bin^1,2, WANG Li-jun³, ZHANG Tie-gang², HUANG Ping-ping²; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2. Key Lab of Northwest Water Resources and Environment Ecology of MOE, Xi’an University of Technology, Xi’an 710048, China;
3. Soil and Water Corservation Station of Dalad Banner, Dalad, Inner Mongolia 014300, China

Keywords:: sloping cropland; total nitrogen; total phosphorus; soil organic carbon; profile distribution

CLC:: S153.6

DOI:: -

Abstract:: The contents of soil water and soil nutrients on sloping corn land in Yingwugou watershed were determined for each soil sample of four different soil depths. Both traditional and geostatistics methods were applied to analyze soil properties in the four different soil depths.The results indicated that the mean contents of soil total nitrogen and soil organic carbon generally decreased with the increase of depth. The mean soil water content rose with the increase of depth. The soil total phosphorus did not indicate obvious change with the increase of soil depth. The total nitrogen, soil water content, soil organic carbon and total phosphorus had moderate variability and strong spatial dependence. The spatial structures of total nitrogen, soil water content and total phosphorus in 0—10 cm layer and 10—20 cm layer could be modeled with a high degree of confidence by semi-variograms in the four different soil depths. The soil organic carbon could not be modeled with a high degree of confidence for the poor spatial structure. The Kriging interpolation in 0—10 cm layer and 10—20 cm layer showed that total nitrogen, soil water content and total phosphorus were hierarchical distribution along the soil depth, the mean contents of total nitrogen decreased from 0.598 g/kg to 0.310 g/kg, and the mean contents of soil water and total phosphorus increased from 12.988%, 0.229 g/kg to 15.439%, 0.366 g/kg, respectively.

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