Dynamic Evaluation Of Land Ecological Security Of Bazhou District,Bazhong City

The Land required to meet the material conditions of human's life,through out the development of human's history,the social civilization and progress are derived from the development and use of the land.With the rapid development of the society and population,the intensity of the land's using continues to increase,and the demand for land comes to a significant increasing.However,the extensive la nd using has also brought many negative effects.Since the land's ecological environment has be destructed,such as the pollution of the environment,the shortages of the resource and so many ecological problems appear.Therefore,the study for the land ecological security issues are becoming increasingly important,and the land ecological security issues as a frontier was also be mentioned to the agenda.In this article,the district of Bazhou has been chosen as the study area,based on the changing of the land using on the area,analyze the problems of the land using,and then construct the index system of ecological security of the land,which based on the natural,the economic and the social aspect,and select 19 indicators which include the forest coverage rate,the area of the farmland of the average per capita,the fertilizer application amount per unit area,the sewage treatment rate and so on.Not only combining with the MATLAB software,but also by using the analytic hierarchy process and the method of the multi-objective comprehensive evaluation to help the establishment of the evaluation model of the land ecological security.Using the established model to analyze and evaluate the changing of the land ecological security of Bazhou area from 2003 to 2010.Results in curve fitting,Using the software SPSS to curve fitting the result to get the prediction of the land ecological security in the future of the Bazhou area.Evaluation results has showed that: between 2003-2008,the integrated value of the land ecological security is at risk level of Bazhou,and from 2009 to 2010,the ecological security level of the land has been improved to the sensitive ecological security level.The forecast level of the land ecological security have reached a good level between 2014 and 2015.At last,through the analysis of the evaluation results and based on the land ecological security and the ecological security and the ecological security of land economy,The article try to put forward countermeasures and suggestions of the Bazhou area,for example,we should strengthen the protection of the cultivated land,and try to build the type of the environment-friendly land using pattern,using the chemical fertilizers in appropriate amount and manage the industrial wastes,we should promote the construction of the ecological engineering of the land finally.