Study On The Green Roof In Changsha Which Based On Reducing The Harm Of Acid Rain

As the rapid development of the city, the residential environment has becoming increasingly focus of people. The appearance of the green roofs display a new idea to improve city’s environment. Due to its hard popularization, the ecosystem service function of the green roofs remains on the relief of the urban heat island effect of the cities. It deep-rooted researches and explores.The acid rain has become one of the world’s environment problems. This paper proposes that the width and the depth of the research for the green roofs plants and substrate applied in the perfection of the environment should be advanced after the literature review to the harm and control methods of the acid rain and point out that the spread of the green roof is a effective way to control the acid rain.This paper have drown the following conclusion:Presents that the combination of ceramsite and Malila plays a good effect on improve the pH of acid rain though simulation acid rain marinate and eluviate experiment.Put forward the promoting measures of green roof which are appropriate to Changsha after the investigation to current situation of green roof popularization in Changsha, the deep research of three concepts(ecosystem service function,plant landscape and the interface of green roofs) and the comparison of the examples home and abroad connected its development experiences.Provide a firs-ever direction for the design of green roofs by researching cases in which it hold the investigation and the data from experiment as principle and united the specification of the court to integrate the control of acid rain, entertainment and education using plant configuration, interface and detail design.Come up with the conclusion that it is a new spread way and research idea of green roofs to take advantages of the positive effect of green roof in PM2.5, heavy metal pollution, fog weather and rain collection and usage.