Evaluation Research Of Land Ecological Security Based On Practice In Jinzhai County

As a natural economy complex,land is an important cornerstone for the survival and development of mankind.It has the role of supporting and safeguarding the normal and sustained development of human political,economic,social,and cultural activities.The spirit of the Nineteenth Party Congress insisted on coordinating rural economic development,political construction,cultural construction,social construction,ecological civilization construction,and party construction.And in the Central Document No.1 of 2018,it also stated: "Promoting rural green development and creating a new pattern of harmonious coexistence between man and nature." Therefore,the research on land ecological security has become an important frontier subject for current research.This paper takes Jinzhai County of Anhui Province as an empirical area,uses PSR framework model to construct land ecological security evaluation index system,selects 24 indicators,determines weights by entropy weight method,and uses comprehensive evaluation index model to calculate Jinzhai County 2010-2017 comprehensive value of land ecological security.The dynamic evaluation of land ecological security status of Jinzhai County from different time nodes.The findings of this paper are as follows:(1)Based on the PSR model,the relevant scholars at home and abroad are used to construct the evaluation index system and build an evaluation index system suitable for the ecological security of the land in Jinzhai County based on the land ecological security pressure,status and response.(2)From the time scale,the temporal dynamic evaluation and analysis of land ecological security status in Jinzhai County: During the seven years from 2010 to 2016,the land ecological security status in Jinzhai County first declined,then rose again and then declined.The overall trend is fluctuations and upwards.The level of land ecological security has not changed and it is always at the critical level.This shows that the ecological security of land in Jinzhai County is stable and there is a trend of improvement.(3)In this paper,the main component analysis method of SPSS22.0 is used to analyze the land ecological security in Jinzhai County.The main factors influencing land ecological security in Jinzhai County are urbanization level,forest area and tourism income.(4)Based on the analysis of the evaluation results of the land ecological security in the demonstration area,based on the actual situation of the land ecological security in the demonstration area,the ecological safety construction in the demonstration area is combined with the realization of precision poverty alleviation,and relevant suggestions for further safeguarding the land ecological security are provided.