Evaluation On Agricultural Ecological Safety In Changde City Based On PSR Model

Agricultural ecological security is the basis for the development of safe production in various industries in China.In the report on the work of the government in 2022,China also proposed to firmly guard the defense line of food security,but also to improve the quality of independent grain,and realize the sustainable development of China’s grain ecology.Exploring agricultural ecological security can not only improve the overall level of agricultural ecological security in China,but also improve the safety level of agricultural production in China.This paper takes Changde city as an example to study and analyze the current situation of agricultural ecological security in Changde city.As a prefecture-level city that has won the first grain planting area and output in Hunan Province for 18 consecutive years,Changde has maintained a good farming rate and a high grain output in the rural areas of Changde.It can be said that Changde is a typical representative of agricultural production development of prefecture-level cities in China.However,in the process of rapid development in the past 20 years,Changde city has also unilaterally pursued the achievements of economic development,while ignoring the protection of agricultural ecological security.Just like most prefecture-level cities in China,the level of agricultural ecological security shows a sharp decline under the background of the pursuit of GDP.However,in some counties and towns in Changde City,the corresponding agricultural ecological security level has been well protected.From the macro analysis,the overall agricultural ecological security of Changde City shows a downward trend,and the agricultural ecological security of some counties and county-level cities is lower than the overall agricultural ecological security level of Changde City,which is not conducive to the sustainability of the development of agricultural ecological production in Changde City.Using the PSR model,the evaluation indexes such as pressure layer,state layer and response layer were constructed.According to the statistical Yearbook data of Hunan Province from 2012 to 2021,the evaluation indexes were weighted and concluded that the population density of the pressure layer has the greatest weight on the agricultural ecological security of Changde city.Using index level analysis and entropy method to extract the important indicators of chang DE city agricultural ecological security,and use the extracted agricultural ecological security evaluation index of chang DE city county,area of agricultural ecological security evaluation ranking,anxiang county agricultural ecological security level is the highest,hanshou agricultural ecological security level of the lowest.Moreover,from the average value of agricultural ecological security of counties and Changde city,the agricultural ecological security of counties under the jurisdiction is mostly equal to the average value of agricultural ecological security of Changde city.Through the evaluation of the evaluation index of agricultural ecological security in Changde city,it is proposed that Changde city should vigorously develop the construction of agricultural infrastructure,control the population density,improve the use efficiency of agricultural machinery,so as to improve the efficiency of agricultural production.