Geological Environment Quality Evaluation Aroud Jixi Urban Area Of Heilongjiang Province

Jixi is a typical resource-exhausted city of heilongjiang province,due to coal mining produced geological environment problems such as the land subsidence,soil erosion,land desertification for many years.Evaluating the geological environment quality of Jixi and solving its problems is extremely urgent,based on this the paper on the basis of the evaluation theory of geological environment,combined with analytic hierarchy process(ahp)and fuzzy comprehensive evaluation process,and computer technology to Jixi geological environment quality was evaluated,the main research results are as follows:On the basis of full analysis of geological environment factors about Jixi city,this paper set up a representative,comprehensive and maneuverability of the geological environmental quality evaluation index,a total of topography,geological structure,stratigraphic lithology,hydrogeological conditions,the degree of geological hazards,water loss and soil erosion,deforestation,loss of field,soil fertility,leakage of surface water,reduce of groundwater,groundwater quality,surface water quality,vegetation coverage,air quality,damage degree and difficult governance degree of landscape.With the process of fuzzy comprehensive evaluation model of quantitative calculation of Jixi's geological environmental quality were analyzed,at the same time geological environment quality was evaluated based on the ArcGIS platform of geographic information system software in the study area,the thematic mapping function of ArcGIS produced quality grade map of geological environment about Jixi city.The research area of ecological and geological environment is divided into five levels of different areas,poorer areas of the geological environment quality in the study area are mainly concentrated in MuLeng river,MangNiu river and plains of the Yellow River valley,in the plains of other river valley and poorer areas of the geological environment quality are on both sides of the tectonic basin range,poor geological environment quality by the transition to the relatively poor,and after secondary tectonic basin area,until the low hills and the basalt platform region,underground geological environment quality is focused on two levels of excellent and good.According to the actual situation of Jixi,according to the results of the study,from three aspects recommendations of the geological environmental protection,geological environment restoration,geological disaster management to protect the geological environment quality of Jixi city.