基于土地多功能值视角下的江西省耕地利用转型分析

Analysis of Cultivated Land Use Transformation in Jiangxi Province from the Perspective of Land Multi-functional Value

目的:研究江西省耕地隐性形态变化,探索耕地高效利用方向。方法:熵值法,土地系统功能权衡度模型,灰色关联度模型。结果:(1)多功能时序演变特征表明1986-2019年间江西省生态功能值总体减小,生产、生活功能值总体增加。(2)江西省耕地多功能变化经历三个阶段:1986-2002年生态功能转型期,生态功能为主导;2002-2013年生产生态转型期,多功能间发生复杂变化;2013-2019年生活功能转型期,生活功能为主导。(3)多功能间在研究时段内以协同关系为主,协同关系先增强再减弱。外在的主导功能转变以及内在权衡关系的复杂变化共同证明耕地利用在2013年基本实现以生活功能为主导的转型。(4)三个阶段影响因素变化表明人口密度、城镇化率、农林牧渔商品率是影响转型的显著因素。结论:耕地功能层面转型受多方面影响,注重多功能协调发展,推动耕地可持续利用是江西省未来的重点。

Objective:It aims to analyze the changes of cultivated land recessive form and explore the direction of efficient utilization of cultivated land in Jiangxi Province.Method:The function of cultivated land use was analyzed by entropy method,land system function trade-off model(LFTD)and grey correlation degree model.Results:(1)The multi-functional time series evolution was characterized by the overall decrease of ecological function value and the overall increase of production and living function value in Jiangxi Province from 1986 to 2019.(2)The multi-functional change of cultivated land in Jiangxi Province had experienced three stages:the transformation period of ecological function from 1986 to 2002,dominated by ecological function.During the production ecological transformation period from 2002 to 2013,complex changes took place among multi-functions.During the living function transformation period from 2013 to 2019,the living function was dominant.(3)In the research period,the multi-functional relationship was mainly collaborative,and the collaborative relationship first strengthening and then weakening.The transformation of external leading function and the complex change of internal trade-off relationship jointly proved that the transformation of cultivated land use dominated by living function was basically realized in 2013.(4)The change of influencing factors in the three stages showed that population density,urbanization rate and commodity rate of agriculture,forestry,animal husbandry and fishery were the significant factors affecting the transformation.Conclusion:The implicit form change of cultivated land is the deep-seated expression of dominant change.The transformation of cultivated land function is affected by many aspects.Paying attention to the coordinated development of multi-functions and promoting the sustainable utilization of cultivated land is the focus of Jiangxi Province in the future.