基于“生态-农业-城镇”适宜性评价的承德市国土空间潜在冲突识别与格局优化研究

Research on potential conflict identification and pattern optimization of territorial space in Chengde City based on the suitability evaluation of"Ecology-Agriculture-Town"

为优化承德市国土空间格局,综合土地资源、水资源、气象和灾害等要素建立生态保护、农业生产和城镇开发3个方面的适宜性评价体系,利用二维和三维冲突识别模型揭示承德市不同类型潜在冲突的强度和空间分布,遵循"生态保护优先、农业绿色发展和城镇适度开发"原则重构承德市国土空间格局。结果表明:(1)承德市国土空间适宜性表现出"生态保护重要、农业生产和城镇建设一般适宜"的特征。(2)承德市国土空间潜在冲突强度的差异较小,整体以轻度潜在冲突和无潜在冲突为主。生态保护-农业生产-城镇建设潜在冲突和农业生产-城镇建设潜在冲突占据主导,冲突面积分别为72.66%、55.31%。(3)不同功能之间潜在冲突类型在行政单元上具有一定的非均衡性。(4)以潜在冲突和国土空间利用现状为指导,制定国土空间优化格局方法和分区策略是指导空间可持续利用的科学指南。

The scientific identification and mediation of potential conflicts in land space utilization was the foundation of land space optimization.In order to optimize the spatial pattern of Chengde City,the suitability evaluation system of ecological protection,agricultural production and urban development was established by integrating the factors of land resources,water resources,meteorology and disasters in this paper.The two-dimensional and three-dimensional potential conflict identification models were used to reveal the intensity and spatial distribution of different types of potential conflicts and the land spatial pattern was reconstructed following the principle of"ecological protection priority,agricultural green development and appropriate urban development".It was concluded that:(1)The spatial suitability of Chengde city showed the characteristics of"ecological protection was important,agricultural production and urban construction were generally suitable";(2)There was little difference in the intensity of potential conflicts in Chengde City,mainly light potential conflicts and no potential conflicts.The potential conflicts between ecological protection-agricultural production-urban construction,and the potential conflicts between agricultural production-urban construction were dominated,the conflict areas were 72.66%and 55.31%,respectively;(3)The types of potential conflicts between different functions had certain non-equilibrium in administrative units;(4)Taking potential conflicts and the current situation of territorial space utilization as guidance,the formulation of the optimal pattern of territorial space and partitioning strategies were scientific guide to the sustainable use of space.