Research On The Spatial Differentiation Of Ecological Benefits Of Cultivated Land Use In Tianjin

Cultivated land resources are the necessary resources and the foundation for agricultural and rural development.Improving the benefits of cultivated land resources and ensuring the quality of cultivated land resources are of great significance to the comprehensive development of my country’s social economy and the maintenance of domestic food security.With the rapid development of my country’s economy,the degree of urbanization has continued to increase,resulting in a decrease in the amount of cultivated land and a serious decline in the ecological environment of cultivated land.Studying the ecological benefits of cultivated land utilization is a necessary measure to promote green development,strengthen the construction of ecological civilization,and improve the ecological environment of cultivated land.Based on the researches on the ecological benefits of cultivated land use at home and abroad and related concepts,this paper takes various agricultural areas in Tianjin as the research object,and analyzes each area under the guidance of cultivated land value theory,ecological balance theory,sustainable use theory of cultivated land,and mutation theory.Regional overview,establish an evaluation index system for the ecological benefits of cultivated land use,apply the catastrophe progression method to evaluate and analyze the ecological benefits of cultivated land use in 10 agricultural areas from 2007 to 2016,and analyze the spatial differences of each region with Arc GIS software.Explain the influencing factors of the ecological benefits of cultivated land use in Tianjin,and finally summarize the countermeasures to effectively improve the ecological benefits of cultivated land use in Tianjin.Through the systematic research of this article,the conclusions are as follows:(1)The results show that the comprehensive score of the ecological benefit evaluation of cultivated land use in Tianjin rose slowly from 2007 to 2009,reached the lowest value of 0.7775 in 2010,and then rose to the highest value of 0.9382 in2012,and showed a downward trend in the next five years..The ecological benefits of cultivated land use in Tianjin are quite different in space,showing a high spatial distribution in the northeast and southwest regions and low in the southeast.The ecological benefits of cultivated land use in each district are different.The regions with higher ecological benefits of cultivated land use are Baodi District,Ninghe District,Jinghai District,Jizhou District,and Wuqing District.The regions with lower ecological benefits of cultivated land use are Dongli District,Beichen District,Binhai New District and Jinnan District in turn.The ecological benefits of cultivated land use in each district are greatly affected by the index of cultivated land production benefits.(2)The factors affecting the ecological benefits of cultivated land use in Tianjin can be summarized into three aspects: natural factors,socio-economic factors and institutional factors.Natural factors mainly include the impact of natural disasters such as terrain and soil erosion.The socio-economic level is mainly reflected in the adjustment of industrial structure and labor transfer,and the institutional level is mainly reflected in the reform of the rural land system and the existence of more people and less land.In order to improve the ecological benefits of cultivated land use in Tianjin,combined with the previous comprehensive evaluation results of the ecological benefits of cultivated land use in Tianjin,we have promoted the integration of fragmented plots,tapped the potential of cultivated land,developed intensive cultivation and rotation and fallow models,established ecological civilization awareness,protected the ecological environment of cultivated land,and advocated Put forward suggestions and countermeasures in four aspects of organic green agriculture.