城市化对河流系统影响的研究进展

城市化进程对河流系统结构、过程与功能产生显著影响，部分引起河流生态系统退化。本文综述了在城市化过程中影响河流系统的各种因子，认为城市化从三个方面影响河流生态系统结构，一是河流面积，二是河流的河床结构，三是景观尺度上的空间结构；城市化从水文过程和物质循环过程引起河流生态功能变化。河流恢复的难点在于河流系统的复杂化，因此基于不同区域的多目标管理是河流管理和恢复的方向。

The research progress of the effect of urbanization on river system

Urbanization progress changed the structures, progress and function of river system and even destroyed river system to degrade. This paper reviews the different factors and results on river system during the urbanization progress to give theory help of restoration and management of river system. From this paper the review suggests that urbanization affects the river based three aspects： the first is river area; the second is the riverbed structure and the third is the spatial structure on the landscape level. To the river progress, the urbanization changed the hydrological and material recycle progress. The difficulty of river restoration is the complexity of river system. The multiple targets based different regions and ecological function are the management and restoration direction.