Pan Guangbo, Xu Youpeng, Yu Zhihui, Song Song, Zhang Yuan
School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.
School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China.
Environ Res. 2015 May;139:31-5. doi: 10.1016/j.envres.2015.02.013. Epub 2015 Mar 20.
Maintaining the health of the river ecosystem is an essential ecological and environmental guarantee for regional sustainable development and one of the basic objectives in water resource management. With the rapid development of urbanization, the river health situation is deteriorating, especially in urban areas. The river health evaluation is a complex process that involves various natural and social components; eight eco-hydrological indicators were selected to establish an evaluation system, and the variation of river health status under the background of urbanization was explored based on entropy weight and matter-element model. The comprehensive correlative degrees of urban river health of Huzhou City in 2001, 2006 and 2010 were then calculated. The results indicated that river health status of the study area was in the direction of pathological trend, and the impact of limiting factors (such as Shannon's diversity index and agroforestry output growth rate) played an important role in river health. The variation of maximum correlative degree could be classified into stationary status, deterioration status, deterioration-to-improvement status, and improvement-to-deterioration status. There was a severe deterioration situation of river health under the background of urbanization.
维护河流生态系统健康是区域可持续发展的重要生态环境保障，也是水资源管理的基本目标之一。随着城市化的快速发展，河流健康状况不断恶化，尤其是在城市地区。河流健康评价是一个涉及各种自然和社会因素的复杂过程；选取了八个生态水文指标建立评价体系，并基于熵权法和物元模型探讨了城市化背景下河流水健康状况的变化。进而计算了湖州市2001年、2006年和2010年城市河流健康的综合关联度。结果表明，研究区域的河流健康状况呈病态趋势发展，限制因素（如香农多样性指数和农林产出增长率）的影响对河流健康起着重要作用。最大关联度的变化可分为稳定状态、恶化状态、恶化转改善状态和改善转恶化状态。城市化背景下河流健康状况存在严重恶化的情况。
