基于核心-边缘的重庆国土“三生”空间时空格局演变

The "production-living-ecologica" space of Chongqing's land based on core edge evolution of spatiotemporal pattern

通过构建二级“三生”空间用地类型,利用土地利用度和核心-边缘模型分析2000、2010、2020年三期“三生”空间的时空格局。研究表明,近20年中,以“一区两群”的“三生”空间中心特征点向核心区域聚集,主城都市区的核心区域在中心城区,渝东北三峡库区城镇群在万州区和云阳县,渝东南武陵山区城镇群在彭水县。在分布方向及时空变化层面,主城都市区和渝东南武陵山区城镇群的“三生”空间分布方向时空变化显著,渝东北三峡库区城镇群变化较小。国土空间时空格局是“三生”空间研究的重要内容,研究时空格局演变规律有助于协调“三生”功能空间布局,为国土空间格局优化提供参考。

By constructing a secondary type of land use for the"production-living-ecologica"space,the spatial and temporal patterns of the three phases of"production-living-ecologica"space in 2000,2010,and 2020 were analyzed using land use degree and core edge model.Research shows that in the past 20 years,the central feature point of the"production-living-ecologica"spatial center of"One District,Two Groups"gathers towards the core area.The core area of the main urban area is in the central urban area,the urban cluster of the Three Gorges Reservoir Area in Northeast Chongqing is in Wanzhou District and Yunyang County,and the urban cluster of the Wuling Mountain Area in Southeast Chongqing is in Pengshui County.In terms of distribution direction and spatiotemporal changes,the spatial distribution direction of the"production-living-ecologica"in the main urban area and the urban cluster in the Wuling Mountain area of southeastern Chongqing has significant spatiotemporal changes,while the urban cluster in the Three Gorges Reservoir area of northeastern Chongqing has relatively small changes.The spatiotemporal pattern of national territory is an important content of the study of the"production-living-ecologica"space.Studying the evolution laws of the spatiotemporal pattern helps to coordinate the spatial layout of the"production-living-ecologica"functions and provide reference for the optimization of national territory spatial pattern.