Nitrogen runoffs from farms can create large dead zones, like those in the Gulf of Mexico.
从农田流失的氮素会产生大面积的死亡区域，比如墨西哥湾。
These climatic changes had great impacts on Qinghai Lake level and runoffs in this watershed.
这种气候变化特征对流域内的青海湖水位和河川径流有重要影响。
The water flow volume and phosphorus concentration in both runoffs increased with the rainfall intensity improved;
降雨强度大，表面径流和壤中流始流时间早，水流量和浓度相应高，累积输出也多。
The HCH contents in the coastal waters into which the rivers flow are the same low as those in the coastal waters into which the surface runoffs flow.
通过河流输入近岸水域和通过地表径流直接输入近岸水域的HCH含量是一样的，非常低。
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.
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.
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。
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