长江经济带内陆节点城市生态系统状态评价研究——以长江中游城市带为例

在长江经济带战略的实施中,内陆城市开放发展对城市生态环境造成了较大的压力。利用"压力-状态-响应"模型(PSR),对长江中游城市带的10座中心城市生态系统压力、状态和响应进行了综合评价。评价结果表明:1工业污水、废气和固体废弃物排放是城市生态系统产生压力的主要来源;2长江中游城市带中大部分城市生态系统健康状态处于良好以下水平;3加强污染治理项目投资、提高城市森林覆盖率和绿地面积对减缓城市生态系统压力具有较大作用。

Study on evaluation of ecological system state of inland key cities of Yangtze River Economic Belt:case of cities in midstream of Yangtze River

In the implementation of the Yangtze River Economic Belt Strategy, the open and development of inland cities caused great pressure on the urban ecological system. We carry out the comprehensive evaluation of ecological system pressure, state and response in 10 key cities of middle Yangtze River Basin. It shows that the industrial wastewater, waste gas and solid waste discharge are the main sources of the pressure on urban ecological system;the ecosystem health status of most cities in the urban belt of middle Yangtze River Basin is below the well level;strengthening the pollution treatment project investment, impro-ving the forest coverage and the green space area of the city plays an important role in reducing the pressure on urban ecological system.