Analysis On Dynamic Change Of Sensitivity Of Ecological Environment In Muling City

Our country economic development level for many years to maintain rapid growth,the rapid development of productivity and science on the one hand,promoted the progress of human society,but on the other hand,with the development of society,the phenomenon of rapid population growth,deforestation,excessive use of resources,resources gradually ecological destruction increasingly serious problems such as poverty,resources development and the conflict between population development deepens.From the perspective of sustainable development research,the protection of ecological environment is particularly important,and the existing problems of ecological environment also need to be solved.Therefore,this research in mudanjiang northeast Mu Leng city as the research area,DEM,slope,relief degree,slope and curvature,normalized difference vegetation index(NDVI),the distance from the river,lake distance,is apart from the national highway toe from distance,is apart from the county,is apart from the rail distance,the distance from the highway,and population density,a total of 13 factors as evaluation index,application of entropy value method to construct Mu Leng city in 2000-2018,the ecological environment sensitivity evaluation model,and the random forest law of empowerment test results,final analysis Mu Leng ecological environment sensitivity change with time and space characteristics,The corresponding policies and suggestions are put forward according to the natural conditions of Muling City.Muling City is located in the southeast of Heilongjiang Province,belonging to Mudanjiang City,and is a typical area in the agroforestry interlaced area in northeast China.This paper studies and analyzes the sensitivity of ecological environment in Muling City from two aspects of time and space.The results show that:Time: In 2000-2018 period first Mu Leng city ecological environment sensitivity with increased with the increase of time,after 2010 years as the growth of the time and reduce,of which2010 Mu Leng city ecological environment sensitivity of the biggest(= 2.09297),the average annual ecological environment sensitive index,2000 Mu Leng city ecological environment sensitivity of minimum(the average annual ecological environment sensitive index = 2.17494).In space: Muling City was divided into high quality ecological change area,medium ecological change area and poor ecological change area according to the sensitivity index of ecological environment,and the transformation trend of three ecological change areas in different years was analyzed.Research results show that in 2000-2018 Mu Leng city different villages and towns high quality ecological change area all have different degrees of reduction,in addition to the eight sides through town and lower town,the rest of the town of inferior ecological change area increased,the republican township ecological degradation area reached(46.599745 km2),the largest and eight town three ecological change area area surface almost remain the same.In this paper,the Mu Leng city spatial and temporal dynamic changes of ecological environment sensitivity were analyzed,and the results showed that the Mu Leng city in recent years,the ecological environment sensitivity has a tendency to reduce,but there are parts of the ecological environment sensitivity is higher,such as the mainly ferro township northeast and predominantly republican township south,high ecological sensitivity areas vulnerable to external factors,resulting in a trend of environmental deterioration.On the theoretical basis,it provides scientific basis and guiding opinions for the ecological environment governance of Muling City.