Study On Ecological Security Measures In Qinling Area Of Shaanxi Province

Qinling Mountains is an important dividing line in the north and south of China.It has a variety of biological resources and abundant water resources.It is an important ecological function area of Shaanxi and even the whole country.However,with the rapid development of social and economic development in the surrounding areas of the Qinling Mountains in recent years,the demand for natural resources has been increasing and resulting serious damage to the ecological environment of the Qinling Mountains.A series of environmental problems are threatening people's health and life,such as haze,debris flow and soil erosion.Therefore,it is very important to study the ecological security of Shaanxi's Qinling Mountains region,and improve its ecological security.In this paper,according to the background and significance of the research,it is not only combed the theories and related foreign and domestic literature review about ecological security research,but also analyzed ecological status and ecological security situation of Shaanxi Qinling Mountains.Secondly,analyze and compare ecological security evaluation methods,and using the symbiosis theory principle to determine and construct ecological L-V symbiosis model;using the cluster analysis method and variation coefficient method,and improve the inspection index system of ecological security;Apply the AHP and entropy of qualitative and quantitative indicators to determine the weight of.Thirdly,the stable equilibrium point of the ecological L-V symbiosis model is solved,and the stability of the model is analyzed dynamically,and the criterion of ecological safety is obtained.Based on the above model,the ecological status of 38 counties in Shaanxi District of Qinling Mountains province was measured,and its ecological security measurement results were obtained.Finally,the reasons for the unsatisfactory ecological security in the county were analyzed,and the improvement measures were put forward according to the characteristics of Shaanxi and Qinling Mountains.The main conclusions are as follows:(1)L-V model,AHP,entropy method,cluster analysis method and variation coefficient method were combined to make the whole process of quantitative measure,and maximum reduction of the subjective arbitrariness,which will ensure the measure results more scientific and reasonable.(2)Nowadays,The ecological security situations in Shaanxi and Qinling Mountains are as follows: the ecological security situation of the districts and counties in Hanzhoung is the worst,followed by Shangluo City,and the ecological security of Baoji city and Weinan city is relatively good.The longitudinal analysis shows that the ecological security situation of 9 counties in Baqiao area and improved,and the ecological security situation of 10 counties in Hanyin County in a downward trend,especially in Xunyang County,the largest decline,the improvement measures should be taken as soon as possible.(3)The rapid growth of population,the bad development of the second industry,tourism,forestry and pharmaceutical industry and illegal exploitation of mineral resources are the main reasons for the deterioration of the ecological security situation in Qinling Mountains,Shaanxi.In this regard,this paper puts forward suggestions:control the population and improve population quality;optimize the industrial structure and improve production efficiency;strengthen the supervision and management of mineral resources development;utilization and accelerate the construction of Qinling Mountains park.