Research On Land Ecological Security Evaluation Of Panshi City

Under the influence of multiple factors,such as economic development,the sharp increase in the amount of resources needed for human production and life,excessive pursuit of economic efficiency and rough use of resources,the ecological environment is seriously threatened,with the development of economy and the close relationship between countries,the problem of environmental security has become a global problem and has been paid wide attention to.As the carrier of human production and life,land is an important part of ecosystem and plays an important role in ecological security.Land Ecological security means that the structure and function of land ecosystem are not restricted or threatened,and can provide important guarantee for regional economy and sustainable development.In this paper,based on the previous research results,the related concepts,land ecology,man-land relationship theory,sustainable development theory and other theories,to find the unsafe factors and problems in the land system of Panshi,to raise the level of land ecological security,promote rational land use in Panshi,enhance the potential for sustainable development,and promote industrial transformation and comprehensive and rational development in Panshi.Combined with the actual situation in Panshi,the DPSIR land ecological security assessment model was applied to construct the land ecological security assessment system in Panshi by selecting 20 assessment indicators from 2009 to 2018,the similarity degree of the driving force,pressure,state,influence and Response Subsystem in the assessment system of Panshi land ecological security was obtained by using entropy weight method and TOPSIS method.According to the calculation results and evaluation criteria,the land ecological security and its sub-systems in Panshi have been analyzed in the past 10 years.The results show that the overall land ecological security situation in Panshi is gradually improving and has changed from relatively unsafe to critical security,however,the situation is not optimistic,there is much room for improvement;after comprehensive analysis among the subsystems,it is concluded that as Panshi Develops,the increase of land demand and industrial production pollution and other factors have a certain negative impact on the contradiction between people and land.At the same time,the government departments have adopted a series of positive policies and measures to improve the ecological security of land,which is of great significance,at the end of this paper,the problems of land ecological security in Panshi are analyzed and the countermeasures and suggestions are put forward to improve the level of land ecological security in Panshi.