Study On Evaluation Of Ecological Security Of Cultivated Land Resources In Northern Anhui Province

In recent years,the situation of cultivated land protection has become increasingly severe,and the ecological environment of cultivated land has been greatly threatened.Protecting arable land is the key to solving the “three rural issues.” It is closely related to the livelihoods of hundreds of millions of Chinese farmers,and has an impact on economic development and social stability.Must not be underestimated.This paper selects the DPSIR model in the north of Anhui province to construct the evaluation system of ecological security of cultivated land resources,analyzes the change of ecological security of cultivated land resources in the space-time dimension,calculates the ecological security value of cultivated land resources in this area,and divides the corresponding security level according to the calculation results.Using the evaluation results to analyze the obstacles of the ecological security of cultivated land resources in the north of Anhui province in 2007 and 2016 respectively,the factors affecting the change of the ecological security index of the cultivated land resources in different time periods were obtained.Finally,the ecological security of the cultivated land resources in the northern Anhui was forecasted.The main findings are as follows:(1)2007-2010 for the first stage,the area of cultivated land resource ecological TVC rising year by year,but in 2007 the area of cultivated land resource ecological TVC for nearly a decade of low,belong to the security of sensitive state;In the second stage of2011-2013,the change of cultivated land ecological security value in the region showed a downward trend,and the security level was changed from the critical safety to the security sensitivity,and the safe value dropped to 0.3835 in 2013.In the third stage of 2014-2016,the region's cultivated land ecological security value changes overall,and the security level reaches a safe level.(2)In 2016,the cultivated land resource ecological security index ofBengbu city in northern Anhui province is the best,and it is in a safe level.Of Bengbu driving force factors on cultivated land resource ecological security evaluation and score the highest response factors,Bengbu pressure is relatively small population,economic development level is higher,the quality of cultivated land into relatively high,the cultivated land resource ecological security is relatively good.At the same time,the government's attention to ecological protection has been increasing year by year.(3)Analysis of the obstacles to the ecological security of cultivated land resources in northern Anhui province from 2007 to 2016 shows that the reasons for the development of cultivated land resources in northern Anhui have changed constantly in the past ten years.2007 characters of agricultural development mainly rely on pesticide,fertilizer and agricultural films to increase crop yield,but plant species is relatively single,backward farming technology,people are not cultivated land protection consciousness,forming correct lead to agricultural overall efficiency is not high,influence of cultivated land conservation work progress.Wanbei area cultivated land resource ecological security status in 2016 had obvious improvement,pesticide,chemical fertilizer seems lower,agricultural infrastructure and arable land conservation policy releasing,brought arable land conservation work motivation.