Trinity Protection Evaluation And Coupling Coordination Analysis Of Cultivated Land In Shandong Province

Based on the agricultural province of Shandong Province as a study area,from three aspects:cultivated land quantity,quality,ecological constructing evaluation index system of cultivated land in Shandong Province to protect the trinity,the ecological niche suitability model combined with comprehensive index method,2010,2015,2018 in Shandong Province to evaluate the trinity protection of cultivated land,comprehensive analysis and study the content of the cultivated land of the trinity protection suitability.Based on the results of the cultivated land quantity,quality,ecological protection evaluation and the coupling coordination degree,the cultivated land in Shandong Province was divided into different cultivated land protection zones,and the zoning optimization measures for the sustainable development of cultivated land were proposed.The main conclusions are as follows:(1)This article embarks from the actual situation of Shandong Province,build a trinity of cultivated land quantity,cultivated land quality and the ecological protection of comprehensive evaluation index system,to supply ability,social economy and natural factors layer quality,use condition,landscape pattern and environmental quality,biological safety,such as seven,index layer selection per capita arable land area,total grain output,the proportion of primary industry,the first industrial added value of 23 indicators,soil texture,slope and so on,analyzed the 2010,2015,2018,present situation and evolution of every index layer.(2)The ecological niche suitability model combined with comprehensive index method,measuring it is concluded that cultivated land protection is appropriate in 2010-2018 degrees on the value of the whole presents the development trend of the fallen slightly,mainly because of the speeding up of urbanization and industrialization in the area of reduced,resulting in a large number of cultivated land,and led to a decline in cultivated land protection suitability;During the study period,the overall variation range of suitability for quality protection of cultivated land was basically between 0.12 and 0.42,but with the increase of land consolidation,the spatial distribution area of high-quality cultivated land was increased to some extent.The province’s average cultivated land ecological suitability value of 0.09 in2018,ecological protection area of cultivated land suitability value increased significantly.(3)The suitability of the trinity protection of cultivated land in Shandong Province showed a spatial distribution characteristic of"low in the middle and high around".In 2010,the area of low,moderate and high suitable areas accounted for 36.60%,11.56%and 51.84%of the total area,respectively.From 2010 to 2015,the net transfer area of low and moderate suitable areas was 1431.53km~2and 5415.38 km~2,respectively,accounting for 4.84%and18.32%of the change area of suitability grade,respectively.Cultivated land of the trinity(2015-2018)protect the suitability of the low-grade is regarded with moderate suitable net into the area of 3087.10 km~2and 2749.65 km~2,respectively 17.88%and 15.92%of the total suitability level change area,it have declined overall the area of cultivated land protection,mainly with the accelerating of urbanization and the adjustment of industrial structure layout,makes the phenomenon of high quality cultivated land being invaded,the obvious contradiction between cultivated land protection and economic development,there is a decrease in the quantity and quality of cultivated land.(4)By coupling coordination degree model,research on cultivated land quantity,quality,coupling research on ecological protection,cultivated land resources can be divided into high coordination area,central coordination area,medium-high coordination area,low coordination area,single factor leading area,quality-ecological coordination area,quantity-ecological coordination area,quantity-quality coordination area partition and so on eight different farmland protection,partition optimization measures for the sustainable development of cultivated land is put forward,in order to optimize the Shandong Province cultivated land spatial layout,construction of cultivated land protection coordination management system to provide the reference and reference.