城市化环境胁迫下水生态系统的响应机制——以本溪为例

Response Mechanism of Water Ecosystem under the Influence of Urbanization——Taking the Benxi City as an Example

以本溪市2000~2014年的统计数据为基础;分别从人口、经济、空间、社会构建本溪城市化指标评价体系;从水生态压力(P)、状态(S)、响应(R)构建了水生态综合指标评价体系[1].并构建了两者的响应度模型,对城市化进程的水生态响应时序特征进行了分析.研究显示:1)2000年以来,本溪市城市化综合水平逐步提高,现在已经进入城市化快速发展时期;2)本溪市水生态综合指数、水生态压力指数、水生态状态指数和水生态响应指数呈现出各自变化特征,即水生态压力指数同水生态综合指数变化总体趋势一样,都呈现出"U"型变化曲线,而水生态状态指数2000年后虽有所提升,但呈现整体下降的趋势,水生态响应指数呈现逐年上升的趋势.

On base of the statistical data from 2000 to 2014of Benxi, this articlehas built anurbanization index systembased on population, economy, space and society. Evaluation index system of water ecologyhas been constructed from waterStress, condition and responsea comprehensive. The response model is constructed between them, which has analyzed thetemporal featuresof the water eco-environment in the process of urbanization. Research showed that, Since 2000, the comprehensive level of urbanization in Benxi has been gradually improved. And now it has entered the rapid development period of urbanization; Benxi＇ s water eco-environment comprehensive index, pressure index, state index and response index showing their changing characteristics,the water eco-environment pressure index is the same as the general trend of the comprehensive index of the water eco-environment, showing a ＂U＂ type of change curve. Although the water eco-environment status index has been improved after 2000, it showed the overall downward trend, the water eco-environment response index showed an increasing trend.