4 technical requirements 4.1 green roof green roof green roof proposal targets should be different types of design elements, green roofs green ecological benefits to play, there should be appropriate area index as a guarantee. Green roof advisory indicators in Table 1.4.2 green roof roof bearing security should advance a comprehensive survey indicators and technical data of the building, according to the load-bearing roof, green roof business park, accurate accounting of the weight of construction materials and a receiving visitors Number. Plant material and planting average load load Reference Table 2.4.3 Roof Protection Safety green roof should set up an independent entrance and safe passage, when necessary, set up special staircases. In order to prevent high-altitude falling objects and ensure the safety of visitors, but also set the height of 80cm above the guard rail on the roof perimeter. At the same time pay attention to the safety of fixed plant and facilities. 4.4 green roof construction green roof construction is generally divided into five levels, from the roof of the building in order to root puncture-resistant waterproof layer, row (reservoir) water layer, isolation filter layer, the substrate layer, planting layer. 4.4.1 root puncture-resistant waterproof layer can be used rigid waterproof, flexible waterproof or waterproof coating material in three different methods, should two or two above the waterproof layer fortification, most on the road waterproof layer must be puncture-resistant waterproof material. Material waterproof layer should be compatible, green roofs industrial parks, generally reasonable service life not less than 15 years. Roof Garden Plant Selection: shallow-rooted species, breed strong, northwest of private green roofs, have the ability to resist extreme weather roof planting soil is thin, green roof County, the plant root elongation is restricted, roof garden plants should be selected configuration shallow-rooted plants and slow growth. Locust, Abies and other roots are located in the topsoil 20CM-40CM, the root has a shallow-rooted trees also peach, cherry, acacia, Sophora japonica, Luan tree, sumac, Acer truncatum, forsythia, torch trees, small Bo (bo), crape myrtle, plane trees and so on. Roof garden plant selection: Adaptation planting soil shallow, Low flowering shrubs green roof place for full sun most direct, high light intensity, should try to use hi light plants, but in some specific niches, such as a flower or by the following the wall where sunshine time is short, a rooftop garden plant configuration appropriate selection of some semi-shade-tolerant plant species to plant species rich roof garden. Roof planting layer is thin, the root of the roof in order to prevent the erosion of the building structure, shallow root plants should be based. Green roofs more than in the top or near residential buildings, the application of fertilizer will affect the health district, it should be possible roof garden Plants grown barren resistant plants. Industrial Park green roof _ Shaanxi View source landscape design (certification) _ County green roof provided by the Shaanxi View source landscape Engineering Limited. Shaanxi View source landscape Engineering Co., Ltd. (www.gyu-la.com) is Xi'an, creative design leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shaanxi View source landscape design leadership with the staff warmly welcome all inquiries negotiations to create Shaanxi View source landscape design a better future.