Study On The Plant Community Features Of The Belts Of Trees In Main City Zone Of Chongqing Freeway

With the rapid development of our economy,the highway develop more and more rapid.However, when the rapid development of the same time, the natural scenery and ecological systems have increasingly havoc.In recent years,home and abroad researcher has done a lot of research work at the belts of trees vegetation type and quality, but the relevant study of urbanization still lags behind the rapid development of the highway.Chongqing has a special geographical conditions of the mountain, there is a typical of the hilly city rich in resources, but the study on plant vegetation on the belts of trees in chongqing is lesser. within the scope of this article to the highway on artificial type of vegetation, natural type vegetation and half natural type vegetation as a research objects, the typical in the community, vegetation, and analysis study will be different from the strength of the main belts of trees community of the species, belts of trees width, a community-type, investigations in connection with that view, Belts of trees structure and the characteristics of the ecological environment.the conclusion as following:1. The belts of plants in the main city zone of chongqing is in the face of the following:Tress:Pinus massoniana Lamb, Cedrus Trew,Cinnamomum bodinieri, Cinnamomum japonicum Sieb., bischoffia javanica, Bauhinia variegata, Ficus microcarpa, Magnolia grandiflora L,Syzygium Gaertn,Koelreuteria bipinnata Franch, Robinia Linn, Paulownia tomentosa, Melia azedarach。shrub: brush-stage,Sophora xanthoantha C.Y.Ma,Nerium indicum Mill,Lagerstroemia indica L,Pittosporum tobira, Viburnum awabuki K.Koch, Mahonia fortunei, Lorpetalum chinense, Ligustrum quihoui。2. The belts of plants in the main city zone of chongqing are according to the extent of interference, and its The belts of plants for the artificial and natural The belts of plants, natural The belts of plants three types of。The belts of plants in the main city zone of chongqing are building according to the function, the division for ecological protection type The belts of plant, the view to see patterns The belts of plant have two main types。The main city zone of chongqing the major type of vegetation belts:①vergreen broad-leaved forest,fragrant garden villa;②evergreen coniferous forest,pinus forest;③deciduous broad-leaved forest,black locust garden;④Evergreen the rich mix in the forest,pinus massoniana+fragrant garden villa;⑤chaparral,A tree berek.3. The belts of plants in width and ecological changes and take, separately natural type vegetation and half natural type vegetation and The belts of plants between the three types of the average, in accordance with the increased demand,belts of plants wet in 30m wide or so. according to the cooling belts of plants and width in 20m.4. The belts of plants a distinct increase in the cool wet, different types of the belts of plants increase the degree of cooling wet obvious differences. an ecological effects the belts of plants is closed for the influence of the community to increase the effect of cooling wet with manual the belts of plants close relationship between plant and significant way. the effect of increases are wet with threethe belts of plants types of communities closed the relationship between the same size, cooling increases the effect of the better, the belts of plants closed the big.5. Highway belts of plants has obvious reduce the noise and reduce the noise of the size and species of plant and structure of a clear relationship between the different groups. closed for the size of the impact of ecological effects the belts of plants a steep hill, the terrain and the belts of plants of planting to reduce noise in the community relations.