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.
寻找数据库和工具用于科学环境媒介。寻找工具以确定所有环境媒介的关系等等。
Find databases and tools that apply to specific environmental media Find tools that address the relationships of all environmental media.
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