【摘要】 城市演化的形态特征及其影响因素分析对于城市生态环境治理及国土空间管控具有重要的应用价值。然而，目前对城市形态特征演化过程的长期识别，尤其对北疆地区及少数民族地区的研究仍显不足。以呼和浩特市为例，基于遥感影像、土地利用/覆盖数据集和城市不透水面与绿地空间组分数据集等信息，利用地理统计方法，分析了1949～2018年城市扩展时空特征以及21世纪以来的城市土地覆盖变化，揭示了城市演化的影响因素，进一步探讨了城市规划在城市演化过程中的作用。研究表明：70年间，呼和浩特市区城市土地面积以“减速—保持—加速”的扩展特征增长了67.62倍，在形态上呈现“填充式—圈层式—单轴线外延—双轴线外延”模式。2000年以来，呼和浩特市区城市不透水面比例呈“先上升后下降”的趋势，城市绿地空间比例则呈现“波动上升”的趋势。国家西部大开发战略、城市总体规划等相关规划政策，以及经济因素是影响呼和浩特市城市演化的重要因素。本研究可为呼和浩特市以及北疆少数民族地区的城市可持续发展提供重要的参考。更多还原

【Abstract】 Analyzing the morphological characteristics and influencing factors of urban evolution is essential for urban ecological governance and territory control. However,the current research lacked the long-term identification of the evolution process of urban morphological characteristics in northern China and ethnic minority areas. In this study,remote sensing data,land use/cover dataset,UISA and UGS fraction dataset were used to analyze the spatial and temporal characteristics of urban expansion during 1949 to 2018 and urban land cover change since 2000 in Hohhot. On this basis,the influencing factors of urban evolution was revealed,and the role of urban planning in the process of urban evolution was discussed. The results showed that the urban area of Hohhot has increased by 67.62 folds under the expansion speed ranging from deceleration to acceleration from1949 to 2018,featured by the spatial morphology of infill—loop spreading—uniaxial spreading—biaxial spreading. Since 2000,the proportion of impervious surface in Hohhot showed a trend of“rising first and then decreasing”,while the proportion of urban green space showed a trend of“fluctuating increase”. The central city green space allocation has reached the green sustainable development configuration. China’s Western Development Strategy,the overall urban planning,and other related planning policies,as well as economic factors played important roles in urban evolution in Hohhot. The results can provide an important reference for the sustainable urban development of Hohhot and the northern China.更多还原