Evaluation Of Ecological Security And Analysis Of Barrier Factors In Shanxi Section Of Yellow River Basin

Chinese civilization mainly originated in the Yellow River Basin,and the Yellow River Basin and its flowing areas are extremely important in the development of the country and the nation,science and technology and industrial development,as well as the development of human resources.The Shanxi section of the Yellow River Basin is located in the middle of the Yellow River Basin and has a very important strategic position in the Yellow River Basin.However,with the further development of society and economy,the ecological security of the Shanxi section of the Yellow River Basin is facing serious challenges and sustainable development is facing serious obstacles.Therefore,it is significant to assess and predict the ecological security of the Shanxi section of the Yellow River Basin,analyze its influencing factors,and propose targeted countermeasures and suggestions for the sustainable development of the Shanxi section of the Yellow River Basin.This paper takes seven prefecture-level cities in the Shanxi section of the Yellow River Basin from 2010-2019 as the research object,and according to the actual situation of the Shanxi section of the Yellow River Basin,firstly,the DPSR model is used to construct the index evaluation system,and the index weights are assigned by using the comprehensive assignment method,and the ecological security levels of the seven prefecture-level cities in the Shanxi section of the Yellow River Basin from2010-2019 are derived according to the comprehensive ecological security index method,and the ecological security levels of the seven prefecture-level cities in the Shanxi section of the Yellow River Basin are evaluated by The ecological security of the Shanxi section of the Yellow River Basin was evaluated in two spatial and temporal dimensions;secondly,the factors influencing the ecological security of the Shanxi section of the Yellow River Basin were identified through the barrier degree model;finally,the GM（1,1）model of the gray system theory was used to predict the ecological security level of the Shanxi section of the Yellow River Basin from 2020 to2030 and to explore strategies to improve the ecological security of the Shanxi section of the Yellow River Basin.The results are as follows.（1）From 2010-2019,the overall ecological safety composite index of the Shanxi section of the Yellow River Basin is increasing,and the ecological safety level changes from moderate warning to safer,indicating that the overall ecological safety of the Shanxi section of the Yellow River Basin is gradually becoming better.The ecological safety index of the seven cities in the Shanxi section of the Yellow River Basin has increased.Among them,Taiyuan and Jincheng have the highest ecological safety level,while Linfen and Xinzhou have lower ecological safety levels,and the ecological safety status of each municipality is uneven.（2）From 2010-2019,the main obstacle factors varied from year to year.The main obstacle factor of ecological security in the Shanxi section of the Yellow River Basin in 2010 was the forest coverage rate;from 2011-2013,the area of soil erosion control;from 2014-2017,the number of ecological environment-related policies introduced;and from 2018-2019,the area of urban construction land.In 2010,2013,2016,and 2019,the main obstacle factors in Taiyuan City are soil erosion area and soil erosion control area;in Jincheng City,the number of ecological environmentrelated policies introduced and soil erosion control area;in Jinzhong City,the main obstacle factors are forest coverage rate,soil erosion control area,and the number of ecological environment-related policies introduced;in Yuncheng City,the for Jinzhong City;for Yuncheng City,the number of ecological environment-related policies and the area under erosion control;for Xinzhou City,the forest coverage rate and the number of ecological environment-related policies;for Linfen City,the industrial SO2 emissions;and for Luliang City,the area under erosion and the number of ecological environment-related policies.（3）Based on the ecological safety values of the Shanxi section of the Yellow River Basin from 2010 to 2019,it is predicted that the comprehensive index of ecological safety in the Shanxi section of the Yellow River Basin area will increase year by year from 2020 to 2030,and the ecological safety level will rise from critical safety to safer;the comprehensive indexes of the driving force system,pressure system,state system and response system will increase year by year,indicating that in the period of 2020-2030 The ecological environment of the Shanxi section of the Yellow River Basin is getting better year by year during the eleven-year period.By studying the ecological security and obstacle factors of the Shanxi section of the Yellow River Basin,this paper identifies the current ecological security problems in the basin and proposes targeted countermeasure suggestions.