Based On Geological Environment Assessment:the Research Of Urban Green Space System Planning Of Xiaogan

Geological environment is an important part of natural environment system,which has the most close contact with human activity above ground part of the lithosphere,provides the necessary environment and resources for human,and human activity create a positive or negative effect to geological environment in turn.Based on the geological environment of Xiaogan,this paper has discussed the natural geographical environment,geological environmental background and the social environment of Xiaogan,described the climate,soil,vegetation and the formation lithology,geological structure,topography and geomorphology and hydrogeology conditions,analyzed the geological environmental problems of water pollution,flood disaster and soil erosion,and put forward the preventive measures,it made up a geological environment evaluation of digital model and quality assessment system,divided the geological environment into water environment,soil environment and rock environment,and the results is that the water pollution is seriously affected by human activity.The green space systerm,which makes up the most important content of urban enviorment,blending with culture tradition and religious history,is an extensive space where the specific natural geographical structure,physiognomy feature and plant community in certain belt.It is not only the ecological foundation of the city,but also reflects the accumulation of human civilization and history.In other words,it is the unique humanitis and natural resources of a city.However,with the accelerated process of civilization in our country,the urban planning offen overlook the limitation of natural resources and the sustainability of ecological enviroment.To reduce the enviroment pressure from the rapid economic development and the accelerated civilization,make rational use of geological condition and environment of city construction,our country has began to pay more and more attention to the geological environment,as the basis for city construction in the urban planning.Based on the geological environment background of Xiaogan,according to the geological environment assessment results,we can use the basic principles of geology,ecology,modern urban planning,to study the space structure of its ecological greenareas and the layout pattern of urban green area system and feasible the configuration of garden plants with the research of current situation of the green system,natural matrix.At last,the paper suggests new development methods for Xiaogan city under the geological environment assessment.