Delimitation of Urban Growth Boundary Based on the Coordination of Ecology and Residential Activity Spaces: A Case Study of Jinan, China

基于生态与居民活动空间的城市增长边界划定研究——以济南市为例（英文）

Delimitation of an urban growth boundary(UGB)can effectively curb disorderly urban expansion,optimize urban development space and protect the ecological environment.Eco-environmental sensitivity was evaluated and areas prohibiting construction expansion were extracted by establishing an index system.Point of interest(POI)and microblog data were utilized to analyze the expansion of residential activity space.Urban space expansion potential was calculated using a comprehensive evaluation model,and an urban growth boundary for Jinan in 2020 was delimited combining the predicted urban expansion scale.The results showed that:(1)An evaluation of eco-environmental sensitivity can effectively protect ecological land and provide an ecological basis for urban expansion.Regions with high eco-environmental sensitivities in Jinan are located along the banks of the Yellow River and Xiaoqing River and in southeast mountainous areas,but eco-environmental sensitivities in the central,north and southeast areas are relatively low;(2)The model to evaluate urban residential activity expansion can quantify the spatial distribution of urban residents’activities.Regions with high potential for residential activity space expansion in Jinan are mainly concentrated in the middle of Jinan and most are part of existing built-up areas and surrounding areas;(3)The method that delimits urban growth boundaries based on the coordination of ecology and residential activity space is reasonable.Spatial expansion in Jinan mainly extends towards the east and west wings,and the boundary conforms to the spatial strategy guiding Jinan’s development and is consistent with the overall layout in related plans.Considering both ecological protection and the internal forces driving urban expansion,the method of urban growth boundary delimitation used in this study can provide a reference and practical help for studies and management of urban development in the new era.

城市增长边界划定能有效遏制城市无序扩张,优化城市开发空间,保护生态环境。本文通过构建指标体系进行生态环境敏感性评价并提取了禁止建设区,利用POI与微博数据分析了居民活动扩展空间,基于构建的模型综合评价城市空间扩展潜力,并根据城市扩展预测规模划定了济南市2020年城市增长边界。研究结果表明:(1)城市生态环境敏感性评价能有效保护生态用地,为城市扩展提供生态基础。济南市生态环境敏感性较高的地区位于黄河、小清河两岸和东南部山区,中部、北部与西南部的生态环境敏感性则相对较低,城市扩展基础较好。(2)构建的城市居民活动扩展空间评价模型可以量化城市居民活动空间分布,济南市居民活动空间扩展高值区主要集中分布在济南市中部,多为现有建成区及周边地区。(3)基于生态与居民活动空间的城市增长边界划定方法具有一定的合理性,划定结果表明济南市空间扩展主要向东西两翼延伸,该边界与济南市发展的空间战略相符,与相关规划中总体格局一致。基于生态与居民活动空间的城市增长边界划定方法既保护了生态环境,又充分考虑城市扩展的内在驱动力,将为新时代下城市发展研究提供相关参考。