乡村振兴视角下广西耕地利用转型时空格局及障碍因子分析

Spatiotemporal Pattern and Obstacle Factors of Cultivated Land Use Transformation in Guangxi from Perspective of Rural Revitalization

基于乡村振兴和耕地利用转型的相互关系构建了评价指标体系,运用熵值法、变异系数法和障碍度模型分析了广西14个地级市2009~2018年的耕地利用转型的时空变化特征及其障碍因子。结果表明:(1)广西耕地利用综合转型区域差异先扩大后缩小,存在一定的空间不均衡性;空间转型提升幅度不明显,高值区呈现出“先增后减再增”的变化趋势;功能转型总体呈现出“先上升后下降”的波动变化特征。(2)数量变化、结构转换、生活功能和生态功能障碍度呈下降趋势,生产功能障碍度呈上升趋势。第一产业从业人员比重、土地复垦率、地均农林牧渔业总产值、人均耕地面积、有效灌溉面积比例成为主要障碍因子。

Based on the relationship between rural revitalization and cultivated land use transformation,the evaluation index system was constructed,and the spatiotemporal change characteristics and obstacle factors of cultivated land use transformation of 14 prefecture-level cities in Guangxi from 2009 to 2018 were analyzed by entropy method,coefficient of variation method and obstacle degree model.The results showed that:(1)The regional differences of the comprehensive transition of cultivated land use in Guangxi increased first and then decreased,and there was a certain spatial imbalance.The spatial transformation of cultivated land use showed a trend of“first increasing,then decreasing and then increasing”.The functional transformation presented a fluctuating change characteristic of“rising first and then falling”.(2)The number change,structural transformation,life function and ecological dysfunction showed a downward trend,and the production dysfunction showed an upward trend.The proportion of employees in the primary industry,the rate of land reclamation,the total output value of agriculture,forestry,animal husbandry and fishery per land,the per capita arable land area,and the ratio of effective irrigation area have become the main obstacle factors.