Research On The Spatiotemporal Evolution And Comprehensive Evaluation Of Forest Ecological Security In Henan Province

As the economy and society of various cities in Henan Province constantly develop,the pressure undertaken by the existing forest ecosystem increases day by day.At present,when the whole society pays more and more attention to the ecological environment,this paper aims to objectively evaluate the status of forest ecological security in Henan Province,and explore the relationship between the problems existing in forest ecological security of Henan province and the sustainable and healthy development of economy and society.Therefore,in this paper,18 provincial cities in Henan Province were selected as the research objects,the evaluation system of forest ecological security of various cities in Henan province was constructed by relying on the PSR framework model.Later,the expert survey method and entropy weight method were selected to determine the comprehensive weight of each index.The data of three years(2008,2013 and 2018)were determined,The comprehensive weight grade method was used to obtain the status quo of forest ecological security of 18 provincial cities in Henan Province,and analyze the advantages and disadvantages of the status quo of forest ecological security of each city.On this basis,the spatiotemporal evolution of the status quo of forest ecological security in Henan Province was obtained.The main conclusions are as follows:(1)The forest ecological security level of Henan Province was 0.381,0.390,and 0.404 in 2008,2013,and 2018,respectively,belonging to the general forest security situation.The whole forest ecosystem in Henan Province was stable and could give play to the basic forest ecological function.Among the three levels evaluating the security levels of forest ecological security,including status,pressure,and response,the proportion of status level,pressure level,and response level was 37.67%,34%,and 28.33%,respectively.(2)In terms of time distribution,the forest ecological security status of 18 prefectures and cities in Henan Province improved in 2018 compared with that of 2008 and 2013.The number of cities with poor forest ecological security status decreased from 2 to 1,the number of cities with normal forest ecological security status increased from 12 to 13,and the number of cities with good forest ecological security status remained 4.Among them,the forest ecological security status of Luoyang,Sanmenxia,Nanyang and Xinyang was good,that of Zhengzhou was poor,and that of the remaining 13 cities was general.The overall forest ecological security level of Henan Province has been rising steadily since 2008,2013,and 2018.In 2013,it was 2.36%higher than that of 2008,and in 2018,it was 3.59%and 6.04%higher than that of 2013 and 2008,respectively.The improvement speed of forest ecological security was obviously rapid.However,the forest security situation of the whole province was still in the general standard,and there were a lot of problems,for example,the bearing pressure of the forest ecosystem constantly increased,and the ecological security stability and self-regulation ability were poor.(3)In terms of spatial distribution,influenced by the topographic distribution and economic development of each city,the forest ecological conditions of the Funiu Mountain ecological barrier area and Tongbai-Dabie Mountain ecological barrier area in the west and south of Henan Province were good,but that of the ecological conservation area of the central plain was still in the general state.However,as the forest ecological security of Jiaozuo and Zhengzhou was relatively poor,the forest security of the northern Taihang Mountain ecological barrier area and the metropolitan ecological area of Zhengzhou was overall lower than the average level of the whole province.The results showed that the present situation of forest resources in Henan Province was quite different in space,and the distribution was not balanced,which was not conducive to the overall development of forest ecological security in the whole Henan Province.(4)Based on the discussion of forest ecological security in Henan Province,the suggestions and measures to improve the overall forest ecological security situation in Henan Province were put forward from the following five perspectives,including increasing the number of forest resources,improving the quality of forest resources,strengthening the forest ecological protection,speeding up urban forest ecological construction,and optimizing forest industry development.