Urban ecological land planning is an important foundation and premise of urban ecosystem protection. Based on the structure of geosynclinal fold belt, the spatial allocation model of ecological land in the urban fringe of Xi’an city is designed. Taking the ecological land in the urban fringe of Xi’an city as an example, after analyzing the structure of geosynclinal fold belt in this area, the comprehensive index model of regional ecological effect based on the structure of geosynclinal fold belt is adopted to calculate the comprehensive index of ecological effect in the urban fringe of Xi’an city and obtain the ecological number in the urban fringe of Xi’an city. According to the ecological data, the paper constructs the spatial planning model of urban ecological land based on ant colony optimization algorithm and realizes the spatial allocation model design of ecological land in the urban fringe of Xi’an city based on geosynclinal fold belt structure. The results show that the edge space of Xi’an city based on geosynclinal fold belt structure is in good agreement with each other after the spatial allocation of ecological land in urban fringe area of Xi’an city by using the designed model, and the ecosystem service value is high, which provides some help for improving the urban ecosystem protection.

城市生态土地规划是城市生态系统保护的重要基础和前提。根据地沟褶皱带的结构，设计了西安城市边缘生态土地的空间分配模型。以西安市城市边缘的生态用地为例，在分析该区地斜褶皱带的结构后，采用基于地斜褶皱带结构的区域生态效应综合指标模型来计算西安市城市边缘生态效应综合指数，获得西安市城市边缘生态因子。根据生态数据 基于蚁群优化算法构建城市生态土地空间规划模型，并基于地心褶皱带结构实现了西安城市边缘生态土地的空间分配模型设计。结果表明，利用设计模型对西安城市边缘区生态用地进行空间分配后，基于地向褶皱带结构的西安市边缘空间具有良好的一致性。服务价值高，这为改善城市生态系统保护提供了帮助。