首页|基于遥感的郑州市主城区空间扩展和时空演变特征研究

基于遥感的郑州市主城区空间扩展和时空演变特征研究

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为监测建成区时空演变过程,推进郑州市城市规划建设和高质量发展,选取6期Landsat影像,通过构建专家知识决策树对郑州市主城区在1990-2020年的空间扩展进行遥感监测和时空演变特征分析.结果表明:1990-2020年,郑州市主城区建成区面积增加了 464.62 km2,城市扩展速度和强度均经历了先上升、后下降两个阶段,目前仍处于快速扩张时期;受功能新区规划建设的影响,郑州市往正东和东南方向扩展明显,城市发展重心主要集中于东部的金水区;研究时段内城市空间扩展弹性指数(5.75)远高于合理水平,意味着城市土地资源利用率不高.研究成果客观揭示了郑州市空间扩展规律,对优化国土空间格局和提升城市整体功能具有参考价值.
Spatial expansion and spatial-temporal evolution characteristics of main urban area of Zhengzhou based on remote sensing
To monitor the spatial and temporal evolution of the built-up area and promote the urban planning and construction and high-quality development of Zhengzhou City,six periods of Landsat images were selected to remotely monitor and characterize the spatial and temporal evolution of the spatial expansion of the main ur-ban area of Zhengzhou City from 1990 to 2020 by constructing an expert knowledge decision tree.The results show that:from 1990 to 2020,the built-up area of the main urban area of Zhengzhou City increased by 464.62 km2,and the speed and intensity of urban expansion went through two phases of rising and then decli-ning,and is still in a period of rapid expansion;affected by the planning and construction of functional new are-as,Zhengzhou City expands significantly in the direction of the due east and southeast,and urban development is mainly concentrated in Jinshui District in the east;the spatial expansion elasticity index(5.75)of the city during the study period is much higher than the reasonable level,which means that the utilization rate of urban land resources is not high.The results of the study objectively reveal the spatial expansion pattern of Zhengzhou City,which is of reference value for optimizing the spatial pattern of the land and improving the overall function of the city.

spatial expansionremote sensingZhengzhou CityLandsatexpansion speed

张志敏、孙奇石、康东亮、鲁春阳

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河南城建学院测绘与城市空间信息学院,河南平顶山 467036

长江水利委员会长江流域水土保持监测中心站,湖北武汉 430010

山东科技大学测绘与空间信息学院,山东青岛 266590

空间扩展 遥感监测 郑州市 Landsat 扩展速度

河南省哲学社会科学规划项目河南省科技攻关计划河南省软科学研究计划河南省住建厅项目河南省住建厅项目

2022BJJ026242102320345242400410624R-2107R-2320

2024

河南城建学院学报
河南城建学院

河南城建学院学报

影响因子:0.457
ISSN:1674-7046
年,卷(期):2024.33(3)