广西国土空间格局演变特征与形成机理

国土空间格局演化与形成机理是人地系统交互关系研究的科学问题和国土空间规划的关键前提。采用地学图谱、标准差椭圆和空间自相关方法，分析2000—2018年广西国土空间格局演变特征，并运用地理探测器揭示其形成机理。结果表明：① 广西城镇空间加速挤占农业、生态空间形成了“一增双减”的面积变化特征，国土空间动态变化速度加快；② 广西国土空间相互转化频繁，转移轨迹多样性特征明显，农业空间与生态空间加速互换以及生态空间内部结构加快重组；③ 城镇空间与农业空间互竞主导了广西国土空间的迁移路径，城镇、农业空间存在“南高北低”和生态空间存在“北高南低”的集聚特征；④ 广西国土空间格局演变受自然地理与社会经济因素的共同作用影响，自然环境条件的限制作用减弱，社会经济发展水平驱动力增强，政策调控力度驱动作用深远。下一步可通过国土空间规划、调整产业布局和引导生产生活方式优化国土空间格局。

Evolution Characteristics and Formation Mechanism of Territorial Space Pattern in Guangxi Zhuang Autonomous Region

The evolution and formation mechanism of territorial space pattern is a scientific question of the study on human-earth system interaction, and it is the key premise of territorial space planning. The Geo-graphic, Standard deviation ellipse model and Spatial autocorrelation method were performed to analyze the evolution characteristics of territorial spatial pattern in Guangxi Zhuang Autonomous Region from 2000 to 2018, and the Geographic detector was used to reveal the formation mechanism. The results show that: 1) The urban space area increased, while the area of agricultural space and ecological space decreased in Guangxi Zhuang Autonomous Region. In addition, the expansion of urban space was consistent with the contraction of agricultural space and ecological space, and the dynamic changes of territorial space accelerated. 2) The territorial space transformation of Guangxi Zhuang Autonomous Region was frequent, and there was a significant diversity of the transfer trajectory It means that the exchange between agricultural space and ecological space and the reorganization of the internal structure of ecological space were accelerated. 3) The migration path of territorial space was dominated by the interaction between urban space and agricultural space in Guangxi Zhuang Autonomous Region. The agglomeration characteristics of urban space and agricultural space showed ‘high in the south and low in the north’, and that of ecological space were ‘high in the north and low in the south’. 4） The evolution of territorial space pattern was influenced by the joint action of physical geography and socioeconomic factors in Guangxi Zhuang Autonomous Region. The limiting effect of natural environmental conditions was gradually weakened, while the driving force of socioeconomic development level and the intensity of policy regulation played a far-reaching role. Therefore, the spatial pattern of Guangxi Zhuang Autonomous Region can be optimized through territorial spatial planning, adjustment of industrial layout and guidance of production and life style.