Research In Dongshan District Of Jilin City Road Optimization Based On Ecological Impact Assessment

In the construction and operation process of city road,it may play a positive role in promoting economic development and residents,at the same time,it will also have a lot of impact on the ecological environment.Under the premise of human fully enjoy the convenience of the road,how to guarantee the benign development of ecological environment,maintain the good environment and the social stability,establish a long-term mechanism of human and environment harmonious coexistence,become an important topic in the present stage Chinese each city road.In this paper,as the research object of Dongshan District of Jilin city,it based on summarizing the domestic and international road ecology theory and practice,construct the index system of ecological evaluation and makes the appraisal to the Dongshan area road ecological situation,and put forward the optimization strategy and corresponding measures through the path analysis of related factors.Firstly,taking the road ecological theory and landscape ecology optimization theory as the theoretical foundation,through analysis of different ecological effect type of urban and suburban areas and central area roads,extract the corresponding index layer,use the the analytic hierarchy process(AHP)to determine the weight of ecological evaluation index of Dongshan area road system,and then select the ecological evaluation index matrix which is suit for Dongshan district road system,and establish the fuzzy evaluation model.Secondly,combining with the actual situation in Dongshan District Planning and present situation of the environment,re division of Ecological Evaluation Division,divided into Binjiang near natural groups,city life livable group and industrial group according to the district land use pattern and characteristic of the road.Based on ecological effects of different group roads,analysis the weight and fuzzy evaluation to the three groups.To determine the ecological effects of sorting index weight of each group,and to determine the membership degree of each index using fuzzy evaluation method,calculation of the weighted average of the road ecological index system,obtains three partitions of graphs and the weights of evaluation matrix and fuzzy evaluation to determine the distribution map of the area and ecological optimization focus.Finally,Dongshan District of road ecological optimization scheme is proposed:First,flexibility in the use of ecological design,solve the problem of the various area road network and the surrounding environment from last chapter;Second,according to the suburb urban road,from the design of local habitat node,optimize the layout of vegetation community,GIS ecological suitability wiring design three angles to improve the safety of animal migration,to evacuate the city internal pollution,to reduce the effects of wind and snow on the road ecological degree;Third,according to the central area of urban road,through optimizing appropriate anti pollution ecology of vegetation types in Dongshan District,reducing in Dongshan District Road gas pollution effect by the plant's own ecological restoration,to improve the road green quantity and the green rate,to increase the traffic and pedestrian comfort.By using the natural drainage design method,alleviate the water pollution problem brought about by the Dongshan District of urban runoff.The research provides scientific basis and optimization measures for the construction and management of Dongshan District of Jilin city urban road ecological,also can provide the model analysis method and the technical means for the same type of cold hill road construction in urban fringe.