Cultivated Land Use Transition In Linchuan District Of Fuzhou City, Jiangxi Province

As the basic carrier of agricultural development,cultivated land resources are the key environmental factors for human survival and development.Based on the change data for land using and socio-economic data of Linchuan District of Fuzhou City,Jiangxi Province at the end of 2005,2010 and 2015,this paper uses the methods of entropy,comprehensive evaluation,linear weighted synthesis and coupled coordinated development model and so on to explore the temporal and spatial evolution process and coupling coordination degree of cultivated land utilization transformation in 30 townships in Linchuan District by Arc Gis10.2,Fragstats4.2,Spss22,Excel2007,and the influencing factors are analyzed.The main conclusions are as follows.(1)During the research period,the total cultivated land area in Linchuan District decreased year by year in time series distribution,and the decreasing trend was increasing.The cultivated land area of central urban showed a large decline in the time series distribution,especially Zhongling Street and Chonggang Town.The cultivated land area of non-central urban showed a small increase in the time series distribution,and the cultivated land in Hebu Township and Gaoping Township increased more.In terms of spatial distribution,the area of cultivated land in the north of the central city of Linchuan District is about 3624 hm2,and the area of cultivated land in the south of the central city is about 2690 hm2.The total amount of cultivated land resources is more in the north than south.At the same time,using the cultivated land concentration index model,it can be seen that the concentration index of cultivated land in Linchuan District in 2005,2010 and 2015 was 20.32%,20.43% and 20.60%,respectively,and it gradually increased in time series distribution.(2)The township with the best comprehensive level of cultivated land use transformation in the central area of Linchuan District is Xiaoqiao Town.The townships with large fluctuations in the comprehensive level of cultivated land use transformation are Zhongling Street,and the overall transformation of cultivated land utilization is getting better and better.The transformation of cultivated land spatial form and the transformation of cultivated land functional form transformation are basically in the middle and high intensity coupling,the coupling degree is about 0.5.The level of coupling and coordination development in the central area is on the verge of dysfunction.And the comprehensive evaluation of the relative development relationship of coupling coordination degree is the delay of the spatial transformation of the arable land.(3)The towns and towns with the best comprehensive level of cultivated land use transformation in the non-central urban area of Linchuan District are Rongshan Town,and the townships with the worst comprehensive level of cultivated land use transformation is Mao Pai Town.The transformation of cultivated land spatial form and the transformation of cultivated land functional form transformation are basically at the level of high-intensity coupling development,the coupling degree is above 0.5.The level of coupling and coordination development in the non-central area is on the verge of dysfunction,followed by the reluctance coordination stage.The main types of comprehensive evaluation of the relative development relationship of coupling coordination degree are the lag of the transformation of the spatial form of arable land on the verge of imbalance,then the lag of the transformation of the functional form of arable land and then the lag of the transformation of the spatial form of arable land on the verge of imbalance.(4)During the research period,in the transformation of cultivated land use,the central urban area is dominated by the transformation of cultivated land spatial form,the non-central urban area was transformed from the transformation of cultivated land spatial form to the transformation of cultivated land functional form.The transformation and development of cultivated land use become different is due to socio-economic development,natural geographical environment,policy and institutional factors which include urbanization,reduction of total arable land resources,intensive land activities caused by urban development,increase of total population,decrease of agricultural workers and improvement of mechanization level and so on.In summary,the development of arable land use transformation needs to coordinate the development of arable land spatial transformation and the transformation of arable land functional morphological transformation,so as to achieve the optimal purpose of developing arable land use transformation.