其主要原因是来自上游水体的污染，针对提到的问题提出了防治建议。
The main causes result from the fact that the upper reaches of Shenwo Reservoir is polluted, thus, the suggestion is put forward to prevent the variety.
水体质量评价已成为当前开展水环境规划管理，以及污染综合防治方面所不可缺少的基础工作。
Water quality assessment has become the basis on which water environment planning and management and integrated water control and treatment are carried out.
针对大连市农村水体污染现状，分析了农村水体污染成因，提出了相应防治对策。
The current situation of rural water pollution in Dalian City was investigated. The causes and countermeasures were proposed.
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