广西土地利用动态度时空演变及影响因素分析

Analysis of Spatio-temporal Evolution and Influential Factors of Land Use Dynamics in Guangxi

为探讨广西土地利用动态度的时空演变格局,运用核密度估计、标准差椭圆对广西2000-2020年土地利用动态度进行了分析。结果表明:①广西土地利用动态度逐年上升,2015-2020年各县区土地利用动态度均提升至4%以上;②各区域内部土地利用动态度在不同时期存在分化现象,但区域差异均逐渐收敛,土地利用动态度越发均衡;③土地利用动态度分布重心由来宾市兴宾区开始转移,最后逐渐靠近广西几何中心;④自然条件的限制造成了广西土地利用动态度“南高北低”的地理格局;人口聚集城镇化加速、产业升级调整使得土地利用动态度总体呈现持续上升趋势;“十三五”期间脱贫攻坚战略的实施使得广西整体土地利用动态度趋向均衡。

To explore the spatiotemporal evolution pattern of land use dynamics in Guangxi,this paper analyzed the land use dynamics in Guangxi from 2000 to 2020 by using kernel density estimation and standard deviation ellipse.The results showed that:①The land use dynamics in Guangxi increased year by year,and the land use dynamics in all counties and districts increased to more than 4% from 2015 to 2020;②There were differentiation phenomena in different periods within each region,but the regional differences gradually converged,and the land use dynamics became more balanced;③The distribution center of land use dynamics began to transfer from Xingbin District of Yingbin City,and finally gradually approached the geometric center of Guangxi;④The restriction of natural conditions caused the geographic pattern of land use dynamics in Guangxi,which was"high in the south and low in the north".The acceleration of population gathering and urbanization,and the adjustment of industrial upgrading made the overall land use dynamics show a continuous upward trend.The implementation of the poverty alleviation strategy during the 13th Five-Year Plan period made the overall land use dynamics in Guangxi tend to be balanced.