城市河流生态修复浅议

城市河流与城市的产生、发展息息相关，且是城市生态系统的重要组成部分，因此研究城市河流对于城市可持续发展及满足人们对于城市环境的需求变化具有重要意义。本文针对城市河流的现状，如直线化、平面化严重、水环境质量恶劣、生态系统功能丧失、水景观缺乏等，分析了造成城市河流当前问题的原因：一是城市化进程的影响；二是人类规划利用城市河流的理念不当。提出了城市河流生态修复应遵循的原则和指导思想，恢复河流生态功能的方法（多自然河流建设，生态技术的应用，创造适宜的生境，利用城市水文循环过程等）及城市河流景观建设的主要因素（合理的可见度、景观异质性、自然因子的有机融入、文化底蕴的挖掘等），并探讨了未来城市河道整治的发展方向。

Brief discussion on urban river course eco-restoration

Urban rivers are closely linked with the establishment and development of cities,and they are important constituent parts of the urban eco-systems.It is very important to carry out studies on urban rivers in order to keep pace with city'sustainable development and citizen' s changing demand.The author points out the necessities of urban river eco-restoration,focusing at the current situations of urban river courses(straightening,complanation,water-environment quality worsening,ecological system functions vanishing and water landscape absenting).A few reasons resulting in current situations are analyzed.One of the reasons is a big impact of urbanization progress in city development.The second is the improper concept for planning and harnessing urban rivers.A few principles and guiding concepts are put forward together with approaches of urban river eco-restoration,i.e.,multi-natural river construction,ecological technologies application,favorable living environment building,and urban hydrological course utilization. The main factors of urban river landscape construction consist of rational visibility,landscape heterogeneity,natural factors utilization and water culture' s mining.The future development of urban rivers is also discussed.