Study And Practice Of Green Roof Based On The Horticulture Technology

As a special greening form, Green Roof refers to planting on kinds of buildings or structures which don’t connect with natural soil. It not only includes flat and sloping roof greening, but also includes planting on balcony, rooftop, terrace, underground parking and elevated road. On the one hand, it can help to solve many urban diseases including urban heat island effect, PM 2.5 and frequent urban water logging, on the other hand, it can protect buildings, promote the development of health care and regulate health. It is a new green method in the centre of city.By the literature and technical research on Green Roof together with the investigation of Hangzhou’s green roof, the paper studies the Milan "Vertical Forest" plant landscape construction technology deeply. Meanwhile it strengthenes the importance of case studies and practical research, researches related gardening techniques application of green roof, and summes up the design and construction of the key technical problems. The main conclusions are as follows:(1)Based on document retrieval of Green Roof at home and abroad, the paper makes the aim and effect of rooftop landscaping associations in Europe, America and Japan etc. Then, it analyses core institutions and main scholars studying Green Roof in China and summarizes related forms of patented technology and development tendency.(2)Through survey on application status of Green Roof in Hangzhou, this paper comes to the following conclusions. The spatial distribution in Hangzhou can be divided into natural style, formal style and comprehensive style. It analyzes the plant species diversity, and makes some recommendations for the proper design and management in view of the present situation. By investigation on Hangzhou Green Roof technology, it summarizes technology of plant selection, cultivation, irrigation and fertilization.(3)Taking the Milan "Vertical Forest" twin towers as an example, the paper studies properties and methods on construction technology of plant landscape. It analyzes the relationship between plant landscape features and space, counted 14 kinds of plant species belonging to 13 genus and 11 families, including five kinds of trees, which are mainly deciduous trees, seven kinds of shrubs, which are mainly flower plants, two kinds of ground cover plants. Then it provides technical support for the development of building construction and plants landscape by coming up with taking plants landscape unit as the form of creating landscape of lighting and analyzing technical construction of plants landscape unit.(4)Through three projects in Shanghai, Lin’an, Chongqing, in practice, to solve the issues of roof load and light-weight planting, root-proof and puncture-proof leakage etc., the paper uses horticulture technology of organic ecotype culture media, soilless technology, automatic irrigation and storage technologies, reaching the effect of precision irrigation, automation, intelligent control, landscaping and so on.