Study On The Evaluation Of Agroecological Security In Chuzhou

Good agro-ecological security state and agro-ecological environment are the premise of sustainable agricultural development and the basis of agricultural modernization.The report to the 19th National Congress of the Communist Party of China(CPC)called for the construction of a harmonious coexistence between man and nature,the promotion of green development and ecological protection,and the formation of a spatial pattern,industrial structure,mode of production and way of life that will save resources and protect the environment.Agro-ecosystem is an important part of the whole ecosystem.If the agro-ecosystem is not safe,it will affect the quality of agricultural products,yield and human health.However,in order to pursue the economic development,the destruction of the agricultural ecosystem is intensified,so the restoration and protection of the agricultural ecosystem is an urgent matter.Under this background,it is of great significance to evaluate the regional agricultural ecological security scientifically and reasonably.In view of this,based on the theory of ecosystem,agricultural eco-economics and sustainable development,the PSR model is applied to Chuzhou,from the pressure,state and response of agro-ecological security,8 primary indicators and 23 secondary indicators were selected to construct an agro-ecological security evaluation system in accordance with the actual situation of Chuzhou.The results of agro-ecological security assessment in Chuzhou from2009 to 2018 were analyzed from time perspective.The contribution degree model was used to analyze the barrier factors of the index layer.The main conclusions are as follows:(1)From a comprehensive perspective,from 2009 to 2018,the comprehensive index of agro-ecological security in Chuzhou showed a gradual upward trend,with the value ranging from 0.3 to 0.6,the level of agro-ecological security was changed from unsafe level in 2009 to safer level in 2018.It shows that while Chuzhou has been developing its economy in the past decade,it has paid attention to the construction of eco-civilized cities and implemented the reduction of chemical fertilizers and pesticides,which has achieved certain results.However,there is still a threat to Chuzhou’s agricultural ecological security,so we need to continue to strengthen the efforts to improve the agricultural eco-environment to improve the quality of agricultural eco-environment.(2)From the analysis of obstacle factors,the main obstacle factors of agro-ecolo gical security in Chuzhou from 2009 to 2018 are afforestation growth rate,forest co veragerate,crop multiple cropping index,fertilizer use intensity and environmental prot ection input as a proportion of GDP,the results showed that Chuzhou should strengt hen afforestation growth ability,increase forest coverage,increase crop replanting index,strengthen hemopoiesis function,control agricultural pollution source.To improve the quality of the agricultural ecosystem in Chuzhou...