Since the beginning of the 21st century, urbanization has brought about dramatic changes in population, life, and economy, while having a significant impact on the distribution of ecosystem service. As research on the relationship between urbanization and ecosystem service has gradually specified, we decided to explore it at different scales. In this paper, we quantified and mapped the spatial–temporal evolution and relationship between urbanization and ecosystem service value in the Pearl River Delta Urban Agglomeration from 2000 to 2019 based on a dual-scale perspective of county and 3 km × 3 km raster. Our results show that the overall trend of urbanization level and ecosystem service value was increasing. Urbanization and ecosystem service value at the county scale showed a negative spatial correlation, while it was not significant at the raster scale. The “high–high” agglomeration was more concentrated, while the other three “low–low”, “low–high” and “high–low” agglomerations were more dispersed. Our findings suggest it is crucial to identify the key factors of small urban areas to grasp the development mechanism in the urbanization process and maintain the balance of the ecosystem.

中文翻译：

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双尺度视角下城市化水平与生态系统服务的时空演化及关系——以珠三角城市群为例

进入 21 世纪以来，城市化带来了人口、生活和经济的巨大变化，同时对生态系统服务的分布产生了重大影响。随着城市化与生态系统服务关系研究的逐渐明确，我们决定在不同的尺度上进行探索。本文基于县域和3km×3km栅格的双尺度视角，对珠江三角洲城市群2000-2019年城镇化与生态系统服务价值的时空演变及关系进行量化和制图。我们的研究结果表明，城市化水平和生态系统服务价值总体呈上升趋势。县域城市化与生态系统服务价值呈现负空间相关性，虽然在光栅尺度上并不显着。“高-高”集聚较为集中，而其他三个“低-低”、“低-高”和“高-低”集聚则较为分散。我们的研究结果表明，识别小城市地区的关键因素对于把握城市化过程中的发展机制和维持生态系统的平衡至关重要。