广西陆地边境带国土空间格局演化及机理研究

Study on the Evolution and Mechanism of Territorial Space Pattern of Land Border Area in Guangxi

研究目的:探索广西陆地边境带国土空间格局演化特征及其内在多维驱动机理,为区域国土空间有序开发与合理布局、实现区域高质量可持续发展提供参考。研究方法:构建国土空间分类体系,采用标准差椭圆模型辨析国土空间时空演变格局特征,借助地理探测器明晰国土空间演化的内在机理。研究结果:(1)1990—2018年广西陆地边境带国土空间水平地域呈现出“中心点—过渡带—边缘层”的格局特征,垂直地域空间梯度差异显著,城镇空间规模大幅提升,农业空间持续萎缩,生态空间呈起伏变动的态势。(2)国土空间重心总体向西北方向移动,其中城镇空间重心先向东南迁移,随后呈反向迂回现象,而农业、生态空间保持东南至西北方向连续移动。(3)各视角因素对国土空间格局演化存在分异,自然地理条件是基础决定性因素,社会经济条件起主导作用,人口因素影响广泛,交通区位作用深刻,政府政策是外在驱动力,各类因子的交互作用对国土空间格局演化具有非线性增强效应和双因子增强效应。研究结论:构建合理有序的国土空间格局,应统筹各要素间的协同作用以实现整体效应与区域可持续发展。

The purpose of this paper is to explore the characteristics of the evolution of the spatial pattern of the land border area in Guangxi and its internal multi-dimensional driving mechanism,to provide reference for the orderly development and rational layout of regional territorial space and to achieve high-quality sustainable development in the region.The research methods are as follows.A gravity-center shift model was used to clarify the spatial and temporal pattern in territorial space evolution,and a geographic detector was used to analyze the driving mechanism of territorial space evolution.The research results show that:1)the horizontal territorial space of Guangxi’s land border area shows a pattern of“central point-transition belt-edge layer”,with significant differences in vertical territorial spatial gradients,a significant increase in the scale of urban space,a continuous shrinkage of agricultural space and an undulating ecological space from 1990 to 2018.2)The center of gravity of the territorial space generally moves in the northwest direction.The center of gravity of the urban space first migrates to the southeast,and then shows a reverse circuitous phenomenon,while the agricultural and ecological space keeps moving from the southeast to the northwest.3)Different perspective factors have different effects on the evolution of territorial space pattern.Natural geographical conditions are the basic decisive factors.Socioeconomic conditions play a leading role.Demographic factors have a wide impact.Transportation location plays a profound role.Government policies are the external driving force.The interaction of factors has significant nonlinear enhancement effect and bifactor enhancement effect on the evolution of the territorial space pattern.In conclusion,constructing a reasonable and orderly territorial space pattern should coordinate the synergistic effects of all factors to realize the overall effect and regional sustainable development.