西安城市整体水环境的构建研究

目的]对西安城市整体水环境的构建进行研究。方法]从城市规划层面对"长安八水"整体恢复和构建的必要性及其基本原则进行讨论,并对从长期规划策略和逐步建设实施2个层面来实现目标的方法和途径进行探讨。结果]提出在恢复"长安八水"城市景观基底时,必须从构筑城市整体水环境角度进行统筹规划,改变线性代谢模式,建设城市水系循环网络;结合现有城市水环境的状况,尝试就地解决城市雨、污水的自循环净化;整体考虑城市集水、存水、引水等工程的联系和贯通,由点及面逐步恢复城市作为生态节点的基本"新陈代谢功能",改善城市人居环境。结论]主动把握古城西安创建国际化大都市的独特机会,统筹规划设计、实施和保护城市水环境系统,将有助于重塑古城水系,重建宜居城市环境;更有助于彰显"长安八水"的城市生态和文脉特征,为城市的未来发展带来无限机遇和可能。

Construction of Overall Water Environment in Xi' an

Objective] The aim was to study on construction of overall water environment in Xi’an.Method] The study discussed necessity and basic principles of overall restoration and construction of "Chang’an Eight Water" from urban planning,and explored related methods from long term planning and concrete construction approaches.Result] The study proposed that urban landscape substrates of "Chang’an Eight Water" should be restored based on overall planning about urban water environment,change of linear metabolism,and construction of drainage circulation system.Furthermore,self-circulation and purification of rainfall and sewage could be made use of there in view of present urban water environment.In addition,urban "metabolism" should be restored progressively to improve urban environment with consideration of water catchment,storage,and diversion.Conclusion] We should take the initiative to catch the special opportunity to build Xi’an into an international metropolis with overall planning,designing and implementation,which will be conducive to reconstruction of water system and pleasant surroundings,and to presentation of urban ecosystem and context in "Chang’ an Eight Water",providing many opportunities for urban development.