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《Water Saving Irrigation》 2015-02
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Spatial Distribution of Nutrients in Dali Lake during Ice-laying and Non-ice-laying Period

WANG Li-ming;ZHEN Zhi-lei;YU Rui-xue;HU Qi-tu;Water Conservancy and Civil Engineering College of Inner Mongolia Agricultural University;Chifeng Keqi Dalinor National Nature Reserve Ecological Tourism Co.,Ltd;  
In order to find out the spatial distribution characteristics of nutrients in the lake of Dali,nutrients in both the ice and water body were monitored all over the lake area during both the ice-laying and non-ice-laying periods.The samples were taken at the designed monitoring points.The analysis results showed that the concentrations of TN and TP were 9.1times and 3.6times higher in the water body than that in the ice layer,respectively.Meanwhile,TN and TP had a relative higher concentration at the monitoring point A7 than that at other points in the ice-laying period.However,the concentrations of TN and TP were lower than that at other points during the non-ice-laying period.This could be the result from both the pollution effect of human activities and the purification effect of emerging plant in the growth period,which was well developed at the monitoring point A7.
【Fund】: 内蒙古自治区重大科技项目(20091408)
【CateGory Index】: X524
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