山区县国土空间规划协同的弹性空间测度——以湖南省茶陵县为例

县域空间是中国城乡交融最明显的空间规划基本单元,空间发展与约束导致的用途冲突或重叠现象非常突出。论文以典型山区县湖南省茶陵县为研究对象,建立多规协同的国土空间系统弹性评价体系,运用土地利用区间优化及适宜性评价方法确定各类用地的弹性区间,预测不同土地利用类型的空间转移特征,并提出相应的弹性空间差异化管控建议。结果表明：茶陵县域国土空间系统相关社会与经济指标的弹性贡献度较小,弹性综合评价值在整体上低于湖南省平均水平。不同用地类型的弹性规划区间有明显差异,按不同用地类型弹性区间分析,园地、林地、水域、耕地、其他农用地对茶陵县发展弹性承纳贡献值依次降低,分别占总面积的3.47%、2.97%、1.02%、0.90%、0.06%。不同用地弹性空间转移具有显著的带状分布特征,呈现生态用地与农用地、建设用地与农用地、建设用地与生态用地空间等3种类型交叠,生态用地与农用地空间交叠区最大,占总面积的6.41%;其次是建设用地与农用地交叠区,占比0.97%。对不同用地类型的弹性交叠区域尤其农用地转为建设用地应加强差异化管控。弹性空间测度研究为山区县域国土空间规划用途管制提供了差异化的空间管理技术方法和实证。

Resilience spatial measurement of coordinated spatial planning in hilly areas: A case study of Chaling County,Hunan Province

County space is the basic unit of spatial planning that shows the greatest urban and rural integration in China. The conflicts or overlaps between spatial development and spatial constraint are particularly prominent in county level territorial spatial planning. Chaling County is a typical hilly area in Hunan Province. Based on land use suitability evaluation and resilience spatial measurement, this study developed a land use resilience evaluation system in typical hilly areas, examined the resilience range of various types of land, spatial transfer of different land use types, and the resilience interval and spatial measurement of different land use types in order to analyze the characteristics of the spatial transfer of resilience space and optimization. The results show that the comprehensive evaluation values of land use structure resilience in Chaling County is lower than the average level of Hunan Province, with low contribution of social and economic resilience. Ecological land has the greatest influence on resilience space. From the perspective of resilience range, the largest contribution to future uncertainty county-wide is from woodland (2.97%), garden land (3.47%), cultivated land (0.90%), and water area (1.02%), and the smallest is from other agricultural land (0.06%) and nature reserve land. The spatial resilience transfer of different land use types shows significant zonal distribution characteristics. The largest overlapping area is ecological land and agricultural land, accounting for 6.41% of the total area, followed by construction land and agricultural land, accounting for 0.97% of the total. It is necessary to strengthen differentiated management and control for the resilience overlapping areas of different land use types, especially the transfer from agricultural land to construction land. This study not only provides some support for county territorial spatial planning and resilience interval from a multi-planning coordination perspective, but also contributes a case reference for similar regional management and control measures.