Zeng Peng, Wang Yu-Kun, Liu Yao-Yi, Wang Hua-Xiang, Chen Shi-Quan, Che Yue
School of Ecological and Environmental Sciences, East China Normal University/Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, Shanghai 200241, China.
Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China.
Ying Yong Sheng Tai Xue Bao. 2020 Feb;31(2):581-589. doi: 10.13287/j.1001-9332.202002.006.
Under the background of rapid urbanization, the degradation of urban river water environment and ecological function in the Taihu Lake Basin has become increasingly prominent. Consequently, it is particularly important to systematically assess urban river habitat. This study referred to and corrected the British Urban River Survey evaluation system. Based on the characte-ristics of urban rivers in the Taihu Lake Basin, we established the evaluation system of stretch habitat quality index (SHQI) of urban river stretches and analyzed the urban river habitat status and spatial variation in the Taihu Lake Basin. The results showed that the SHQI values of the 50 river stretches ranged between 8 and 21, with 3 river stretches classified as "excellent" habitat level, 6 as "good", 27 as "moderate", 9 as "poor", and 5 as "very poor". The vegetation index in urban river habitats in the Taihu Lake Basin was good, whereas that of the physical habitat and material index were bad. The overall ranking of habitats was Zhenjiang: Huzhou: Hangzhou: Jiaxing: Suzhou: Wuxi: Changzhou. There were significant differences in physical habitats, material indices and pollution indices among different cities. The main stream and the tributary section significantly differed in the material index and pollution index, but not significant for SHQI. The evaluation system constructed in this study reflected the current situation of urban river habitats in the Taihu Lake Basin, and could provide guidance for ecological restoration of urban rivers.
在快速城市化背景下，太湖流域城市河流水环境与生态功能退化问题日益突出。因此，系统评估城市河流栖息地尤为重要。本研究参考并修正了英国城市河流调查评估体系，基于太湖流域城市河流特点，建立了城市河段栖息地质量指数（SHQI）评估体系，分析了太湖流域城市河流栖息地现状及空间变异情况。结果表明，50个河段的SHQI值在8至21之间，其中3个河段为“优”等级栖息地，6个为“良”，27个为“中”，9个为“差”，5个为“极差”。太湖流域城市河流栖息地植被指数较好，而物理栖息地和物质指数较差。栖息地总体排名为镇江＞湖州＞杭州＞嘉兴＞苏州＞无锡＞常州。不同城市间物理栖息地、物质指数和污染指数存在显著差异。干流与支流段在物质指数和污染指数上差异显著，但SHQI差异不显著。本研究构建的评估体系反映了太湖流域城市河流栖息地现状，可为城市河流生态修复提供指导。
