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| Tests on non-point pollution of different land uses in upper watershed of Miyun Reservoir |
| GAO Guo-Jun1, LU Bing-Jun2, 3 |
| (1.The Office of the South-North Water Diversion Project Construction Commission in Beijing, 100142, Beijing;2.School of Geography, Beijing Normal University, 100875, Beijing;3.Beijing Soil and Water Conservation Centre, 100038, Beijing: China) |
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Abstract For rational land use and reducing non-point pollution, the effects of different land uses on non-point pollution were analyzed based on observations at different land use plots in Miyun Shixia monitoring site. The results are as follows: The average runoff coefficient was significantly different among the different land uses, in sequence of the stands plots’>the hillside cultivated’s>uneven ground’s>the fish scale pit’s>the horizontal bar’s. The mean annual soil loss and the losses of TP,TN, and CODMn in the funoff increased with the runoff coefficient increase, the loss amount had the significant positive correlation with the runoff coefficient. So, increasing vegetation coverage and changing land use types could be effective methods to reduce the soil loss and water loss, and non-point pollution.
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Received: 12 March 2012
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