漳卫南运河流域生态健康演变分析

Ecological health evolution analysis in the Zhangweinan river basin

流域生态系统健康评价是目前流域生态系统管理研究的热点问题之一。基于PSR模型对漳卫南运河流域三个年代(20世纪80年代、90年代、21世纪初)的流域生态状况进行了健康评价,在分析其生态健康演变趋势的基础上采用典型相关分析法识别了主要的人为驱动因子。结果表明:20世纪80年代以来,漳卫南运河流域的生态健康呈现由好变差又略微转好的趋势;急剧增加的人口压力、水土保持措施的开展以及水资源的开发利用是影响流域健康发展的主要的人类活动驱动因子。

Health assessment of the ecosystem in the drainage basin is one of the hot topics in the field of ecosystem management of drainage basins. Based on the PSR model, the health assessment of ecological conditions of the Zhangweinan River Basin was performed in three eras （1980s, 1990s, and 2000s）. On the basis of the ecological health evolution trend analysis, the main driving factors of human activities were identified using the method of canonical correlation analysis. The results showed that the ecological health of the Zhangweinan River Basin becomes worse and then slightly better since the 1980s, and the main driving factors of human activities affecting the health development of the river basin are the sharp increase in population, soil and water conservation, and utilization of water resources.