The Research Of The Greening Mode Design Of The Expressway In Henan Province

The expressway construction made a great harmful impact to the nearby ecological environment. In order to eliminate the demolishment and improve the landscaping of the expressway, greening had been an important part of the expressway construction. The expressway construction in HeNan province, which is one of the important traffic centers in our country, is developing so quickly that it is very significative to investigate the greening mode of the expressway. By learning theory, field survey and participating in the expressway greening design, this disquisition focuses on researching the greening mode design of the expressway which is adapt to HeNan province. The main content is as follows:1. The summarization and the study extent of the expressway greening mode designThe expressway greening design is mainly composed of middle-part belt greening design, side slope greening design ,the outside of the side slope greening design and grade separation areas greening design. Because of the especial soil conditions and functional requirement, the greening mode design and plants species selection of every part of the expressway are to follow some principles and request.2. The field survey and analysis of the expressway greening mode in Henan provinceBy field survey and studying some blueprints, this paper has investigated and summed up the expressway greening mode in Henan province;and made a quantificational analysis to the grade separation areas plants community characteristic by ecological principle,so that to build a base for the better greening landscaping.3. The research of the plants subarea and application of the expressway greening design in HeNan provinceIt is very crucial to select fitting plants to achieve the success of the expressway greening, because you should consider not only the especial soil conditions but also the different climes. According as its entironment and the rule of plants distributing, HeNan province has been divided four main area. This disquisition analyzes the nature conditions in each area, and screenes out its indigenous plants and the ecdemic plants which are suitable for each area's expressway greening design.4. The optimization design of the expressway greening mode in HeNan province...