流域植被度增大,可降低洪水径流总量和输沙量,显著削减洪峰流量,且减沙效益大于减水效益。
The benefit of sediment reduction is greater than that of runoff reduction with increase of vegetation.
该文对上海市郊的4种地表径流进行了调查,并在污染源评价的基础上与市郊非点源污染总量进行了比较。
Investigations of pollution load of 4 surface runoffs have been conducted, and compared with total non-point pollution load in Shanghai suburbs on the basis of pollution sources assessment.
具体的研究内容主要包括三大部分,分别是:城市径流污染特征研究、负荷总量模拟研究以及生态化处理技术研究。
The specific research contents mainly include three parts: characteristics of urban runoff pollution, simulation of total pollution load, technology of ecological treatment.
全市的水资源总量、地下水、河川径流量呈减少趋势,与降水的变化具有明显的一致性。
Water resources total quantity, underground water and runoff of river assumes the reduced tendency, has the obvious uniformity with the precipitation change.
试验结果表明:在水稻田中甲胺磷的径流和渗漏流失总量约占施入量的12%;
The results of methamidophos accounted for 12.01% of the total application in the field.
介绍了中国城市径流污染状况,指出径流污染控制应纳入污染物总量控制范畴。
The problems of the polluted city rivers were introduced after stating the general situation of the polluted city rivers in the paper.
介绍了中国城市径流污染状况,指出径流污染控制应纳入污染物总量控制范畴。
The problems of the polluted city rivers were introduced after stating the general situation of the polluted city rivers in the paper.
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