The main goal of water resources protection is to meet the requirement for water quality standard in water function zones. The water quality in function zones is affected by many factors.

由于功能区水质状况受诸多因素影响，复杂多变，规划设计的功能区水质保护目标能否实现，主要决定于对功能区各类水质超标风险因子的防御和调控能力。

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Then takes Yancheng as example to review, analyse and evaluate the status quo, characteristics and problems of the development of main function zones of Yancheng City.

接着以盐城市为例，考察、分析和评价了盐城市市域主体功能区开发的现状、特点和存在问题。

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Then takes Yancheng as example to review, analyse and evaluate the status quo, characteristics and problems of the development of main function zones of Yancheng City.

接着以盐城市为例，考察、分析和评价了盐城市市域主体功能区开发的现状、特点和存在问题。

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