- 规划与建设
- 文章编号：1009-6000(2025)08-0097-06
- 中图分类号：X144 文献标识码：B
- Doi：10.3969/j.issn.1009-6000.2025.08.013
- 项目基金：河南沿黄地区生态保护和高质量发展高分综合应用示范（80-Y50G19-9001-22/23）；自然资源科技规划编制及创新能力提升研究（2023-382-14）；河南省地质研究院地质体智能制图系统建设研究（2024-331-XM16）。
- 作者简介：杜虹，河南省地质研究院，高分辨率对地观测系统河南数据与应用中心地质分中心，主任，工程师；
刘文毅，河南省地质研究院，高分辨率对地观测系统河南数据与应用中心地质分中心，所长，高级工程师；
范文欢，高分辨率对地观测系统河南数据与应用中心，副主任，正高级工程师；
刘中杰，河南省地质研究院，高分辨率对地观测系统河南数据与应用中心地质分中心，副院长，正高级工程师。
- 基于GF2卫星与G2SFCA模型的城市绿地可达性及供需平衡研究——以郑州四环为例
- Study on Urban Green Space Accessibility and Supply-Demand Balance Based on GF2 Satellite and G2SFCA Model: A Case Study of Zhengzhou’s Fourth Ring Road
- 杜虹 刘文毅 范文欢 刘中杰
- DU Hong LIU Wenyi FAN Wenhuan LIU Zhongjie
- 摘要：
城市绿地有利于人类福祉，且有助于减轻气候变化及城市化进程的负面影响。郑州市作为“中原绿都”，近年来快速的城市化使其绿地格局出现了一定失衡。文章以郑州四环为例，基于 GF2 高分辨卫星解译的城市绿地及安居客居住区数据，通过 G2SFCA模型及双变量空间自相关模型分析不同尺度下的城市绿地的可达性及供需平衡关系，结果表明：（1）二环内城区人口的高度集中、绿地面积较少导致郑州四环整体绿地格局存在一定失衡。（2）各尺度下城市绿地可达性均呈现“围三阙一”的环形结构，具体表现为四环东、西、北侧高值对二环周边及三环南部低值的圈围。（3）各尺度下城市绿地供需匹配模式呈现一定的空间差异，格网及街道尺度下分别呈现整体失衡及局部失衡，失衡地区集中在南三环南侧及金水路西北侧，存在较高的人口承载压力及匮乏的绿地供给，需要进一步加强绿地建设。研究结果可为郑州四环城市绿地规划及相关政策的制定提供数据支持及参考。 - 关键词：
GF2 卫星；G2SFCA 模型；城市绿地；可达性；郑州四环 - Abstract: Urban green spaces contribute significantly to human well-being and help mitigate the adverse effects of climate change and urbanization. As the “Green Capital of Central China”, Zhengzhou has experienced rapid urbanization in recent years, leading to a certain imbalance in its green space layout. This study examines the area within Zhengzhou’s Fourth Ring Road, utilizing GF2 high-resolution satellite-interpreted urban green space data and Anjuke residential area data. Through the application of the G2SFCA model and a bivariate spatial autocorrelation model, the study analyzes the accessibility and supply-demand balance of urban green spaces at different scales. The results indicate that: (1) The high population concentration and limited green space within the Second Ring Road have caused an overall imbalance in the green space layout within the Fourth Ring Road. (2) The accessibility of urban green spaces at various scales exhibits a “three-sided enclosure with one-sided gap” ring-shaped structure, characterized by high values on the eastern, western, and northern sides of the Fourth Ring Road surrounding low values near the Second Ring Road and the southern part of the Third Ring Road. (3) The supply-demand matching patterns of urban green spaces vary spatially across scales, showing overall imbalance at the grid scale and localized imbalance at the street scale. Areas of imbalance are concentrated on the southern side of the Third Ring Road and the northwest side of Jinshui Road, where high population pressure and insufficient green space supply are evident. Strengthened green space development is needed in these areas. The findings provide data support and references for urban green space planning and related policy formulation within Zhengzhou’s Fourth Ring Road.
- Key words: GF2 satellite; G2SFCA model; urban green space; accessibility; Zhengzhou Fourth Ring Road