依据以上理由，强调了在三峡库区开展基础调查工作和建立污染数据库的必要性，为库区农业环境质量现状评价和总体控制措施的筛选提供科学依据。
The basic pollution investigation and database are thereof proposed for Three Georges Area to provide scientific basis for assessment of agricultural environment quality and overall control measures.
调查了长江口北支湿地环境现状，分析评价了长江口北支湿地的环境质量。
The environment status of wetland in north branch of Changjiang estuary was investigated, its environmental quality was evaluated.
在井田浅层地下水分析测试资料的基础上，采用灰色关联评价方法对浅层地下水环境质量的现状进行评价。
On the basis of the experimental analysis results of the shallow underground water, the grey relational method has been adopted for the evaluation of shallow ground water in Liangbaosi area.
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