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[1]ZHANG Rui-guo,WANG Ke-qin,CHEN Qi-bo,et al.Nitrogen Loss Characteristics in Different Use Slope Field in Songhua Dam Reservoir of Kunming[J].Research of Soil and Water Conservation,2009,16(01):47-50.

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Nitrogen Loss Characteristics in Different Use Slope Field in Songhua Dam Reservoir of Kunming

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 01 Page number: 47-50 Column: Public date: 2009-02-20

Title:: Nitrogen Loss Characteristics in Different Use Slope Field in Songhua Dam Reservoir of Kunming

Author(s):: ZHANG Rui-guo, WANG Ke-qin, CHEN Qi-bo, RAN Jiang-hua; Department of Environment Science and Engineering, Southwest Forestry College, Kunming 650224, China

Keywords:: head waters; slope field; runoff; nitrogen loss; non-point source pollution

CLC:: S153.61

DOI:: -

Abstract:: The nitrogen transformation in the soil erosion and runoff of different use slope field had been observed in rainy season in the middle reaches of Muyang river of Songhua dam reservoir in Kunming. The results showed that the nitrogen loss amount was consistent with loss amount of soil and water in different use slope field, the nitrogen loss in the erosion soil was bare plot>bean plot>tomato plot>forest plot>grass plot, and in the runoff bare plot>bean plot>tomato plot>forest plot>grass plot respectively. The cut-off ability of different use slope field was grass plot>forest plot>tomato plot>bean plot>bare plot respectively, and that of runoff loss and soil erosion loss decreased with the cut-off ability increasing, which lead the nitrogen in runoff and soil erosion to be reduced gradually. Secondly, the nitrogen content in soil, gradient and fertilization are important reasons of nitrogen loss. So, to control soil and water loss is to control non-point source pollution because of nitrogen loss.

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