Abstract
Along with the development of JiuZhai valley tourism scenic spots increasing at the same time, and the ecological environment is also with the change, how much of the change of ecological environment must be given. The TP emissions non-point source is one of the important indexes of each branch road and plank road be given. But the results is discrete, if use the current calculation model. Need a lot of data,For this，surface runoff load model is put forward based on the average load value. Through the comparative analysis, this model lead to specific areas of non-point pollutant average load value according to some small amount of water quality monitoring data. Not only eliminates random character, but also to improve the operability. Non-point source area highway TP emission load of jiuzhai valley is given by the model.
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