Research And Development Of Roof Greening In Lanzhou

In recent years, with the development of city, city scale is getting bigger and bigger, more and more buildings, but the city land for greening area has been reduced, a large number of green land is used for city construction, which will lead to the deterioration of the environment is the city, city residents a direct threat to the health of body and mind. In order to improve the regional climate, to improve the quality of city ecological environment, to ensure the number of traditional forms of green space at the same time, city green space pattern must explore other forms. In this environment, a new variety of greening form appear constantly, the green roof as a supplementary way of city green space system, is an effective way to actively participate in the construction of ecological city, improve the city’s ecological environment, improve the quality of life of city residents. In order to relieve the contradiction between construction land and green space, will be exposed roof into a "green". Characteristics of roof greening is very important in the city space greatly improving the efficiency of land use, which is nearly equal to repay the roof area occupied by building floor area, but also enhance the bearing capacity of ecological system of city space. Many city roof greening at home and abroad has been popularized and gained good benefits in ecological environment, economic development, social and other aspects of. Therefore, research on city roof greening and the promotion of a wide range of practical urgent.This paper is divided into the following five chapters:The first chapter introduces the background, purpose and significance of the topic studied; the second chapter of the green roof and construction techniques, related concepts presented clearly defined, introduced green roofs and abroad origin, development process and the development of status quo and so on different forms of green roofs and all aspects of functional classification carried out a detailed analysis, summarized; the third chapter of the success stories of green roofs and abroad were analyzed, and related technologies they use, green roofs theory and construction specifications are summarized; the fourth chapter of Lanzhou City, the green roof to conduct field research and analysis, within the city limits of the spatial distribution of green roofs and green ecological systems from two aspects, form classification, plant selection, etc. the introduction, the focus, for example analysis of two examples of green roofs in Lanzhou, two factors affecting the development of Lanzhou City of green roofs were compared from natural and unnatural summarizes factors, followed by greening the roof of Civil Engineering, Lanzhou Jiaotong University experiments were analyzed, which summed up the status quo on the basis of the existence of green roof problems and cause analysis and countermeasures discussed; the last chapter of the analysis concluded after comparing domestic and international aspects of green roof green roof is relatively developed urban policy, technology such as green roofs to identify the shortcomings of Lanzhou, Lanzhou City and for the development of green roof problems, propose countermeasures and suggestions feasibility.This paper describes the system research and the current situation and future development of roof greening in Lanzhou. Through the investigation and analysis, the classification and form of roof greening of urban roof greening construction theory and specification requirements, analysis, Lanzhou city in the late stage of roof greening maintenance and management, put forward their own views, and through the field planting green roofs, hope to be able to improve the practice of green roof, and promote the further development of roof greening in Lanzhou.