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.
土地利用总体规划环境影响评价是土地科学研究领域的新课题。
The evaluation of implementation of general land use planning is a new issue of land science research field.
科研环境是指从事科学研究的总体环境，可以划分为硬环境和软环境。
Engaged in scientific research environment is the overall environment, can be divided into hard environment and soft environment.
科研环境是指从事科学研究的总体环境，可以划分为硬环境和软环境。
Engaged in scientific research environment is the overall environment, can be divided into hard environment and soft environment.
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