湿地是地球上重要的生态系统，在维护和调节生态环境质量方面具有不可替代的作用。
Wetland, an important ecosystem on earth, has an irreplaceable role in preserving and regulating ecological environment quality.
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.
公园湿地是城市生态系统的重要组成部分，对改善城市生态环境质量有着不可替代的作用。
Park wetland is an important part of ecosystem in urban and it has great function in improving the eco-environment quality.
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