城市河流在城市生态建设中的意义和应用方法

城市河流是城市生态系统的重要组分之一。本文分析了城市河流在城市生态建设中的水源地，减弱城市热岛效应和洪涝灾害，绿地建设基地，景观多样性的组成，物种多样性保护，组成捷交通，亲近自然场所，自然教育标本等方面的多种意义，指出保持河流的自然地貌特征，维持自然水文过程，控制城市河流水污染，综合规划城市河流与城市建设的关系是发挥城市河流在城市生态系统中作用的基本方法。

Preliminary Study on the Roles and Applied Ways of Urban River in Urban Ecological Construction

Urban river,as an important component of urban ecological system,has many roles in urban ecological construction.In a city,not only can it be used as water resource,greening place,natural area,educational sample,traffic space,but also it can enhance the urban species and landscape diversity and can reduce the effects of hot island and floodwater.For improving the significance of urban river in urban ecological construction,the natural landform and hydrology must be maintained,the water pollution must be controlled,the relation between the urban river and the urban construction must be harmonized.