基于LP-MCDM-CA模型的土地利用结构优化研究——以天水市为例

Research on Optimal Allocation Model of Land Use Structure Based on LP-MCDM-CA Model:the Case of Tianshui

土地利用类型数量在地域空间上的优化配置是实现土地可持续利用,提高土地聚集效应和保持土地生态系统平衡的重要途径。针对当前土地利用优化配置模型存在的不足,构建了基于多目标线性规划与元胞自动机的土地利用优化配置模型(MCDM-CA),在定义邻域规则、转换规则和土地适宜性评价的基础上,开展了基于经济效益、生态效益最大化的土地利用空间配置,实现了土地资源数量结构优化与空间布局优化的统一;并运用该模型对天水市土地利用结构优化进行了实证研究。研究表明,该模型兼顾到区域宏观水平上的土地利用数量结构与局部尺度上的土地利用适宜性,能够较好地同时模拟不同土地利用类型以及不同人类决策情景下的土地利用效果。本研究可为解决土地利用规划中的资源优化配置关键问题提供新的技术方法。

Number of land-use type optimal allocation able land use, improving land agglomeration effect and allocation model based on multi-object linear planning ata（CA） was proposed. On the basis of land suitability of geographic space is an important way to achieve sustain- I maintain a balance of land ecosystems. The land use optimal ,multi-criterion decision-making（MCDM） and cellular aurora- evaluation and definition for neighborhood rules and transfor- mation rule, land use in space allocation was carried out to maximize economic efficiency and ecological benefits. This model achieved a integration optimization both land resources number structural and spatial pattern. Empirical studies was carried out by using this model for land use structure optimization, taking Tianshui as a case. The re- suits show that this integrated model can both simulate the land use demand at macro level and land suitability at micro level, thus realizes the unification of the quantitative structure and the supported spatial a new way to solve the key technical problem in land use programming configuration in China. optimal. The study