Establish a Healthy Hydrological Cycle in Urban Area by Green Stormwater Infrastructure

A series of eco-environmental problems have generated with the urbanization, which lead the urbanization reform in China into a critical period. While the conventional Grey Stormwater Infrastructure, which is pollution intensive and ecological functions absent, fails to support the urban ecological construction, Green Stormwater Infrastructure, as the key part of urban drainage system, plays a vital role in restoring and establishing a healthy hydrological cycle and preserving the ecological environment. This paper states the significant relationship among rainwater, water cycle and urban development and gives a brief introduction on the concept and the composition of stormwater infrastructure, followed by a explanation of the hydrological principles of establishing a healthy urban hydrological cycle based on the Green Stormwater Intrastructure. It then puts forward the idea of establishing a Green Stormwater Infrastructure based sustainable urban stromwater system, and explains the applications of Green Stromwater Infrastructure Planning and Design with practical cases.