Single index, which is usually applied in traditional ecological environment quality assessment, cannot reflect the comprehensive urban ecological environment.
在以往生态环境质量评价中，通常采用单一的环境污染指标，难以全面综合的反应城市生态环境质量状况。
The assessment of ecological environment quality involves many factors and the objects assessed have certain regional differences.
生态环境质量评价涉及多个要素或评价因子，且评价对象存在一定的区域差异性。
The quality assessment of Marine fishing ground ecological environment is the base for protecting Marine fisheries resource and fisheries ecological environment.
海洋渔场生态环境质量状况的评价与保护是海洋渔业资源和渔业生态环境的基础。
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