| 珠三角城市群生态系统服务间相互作用的时空尺度效应分析 |
| 摘要点击 236 全文点击 16 投稿时间：2024-05-06 修订日期：2024-07-02 |
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| 中文关键词 生态系统服务（ESs） 权衡协同关系 生态系统服务簇（ESBs） 时空尺度效应 珠三角城市群 |
| 英文关键词 ecosystem services（ESs） trade-off and synergies ecosystem service bundles（ESBs） spatiotemporal scale effects Pearl River Delta urban agglomeration |
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| 中文摘要 |
| 准确理解跨时空尺度下生态系统服务（ESs）间的相互作用对可持续生态系统管理至关重要.采用InVEST模型和社会统计方法量化了2010~2022年珠三角产水量、土壤保持、水质净化、碳固定、生境质量和粮食供应这6种ESs的空间异质性,并在此基础上通过相关系数法、地理加权回归模型、自组织特征映射结合K-means聚类分析法揭示了1 km2六边形格网、乡镇和区县3个空间尺度上6种ESs间相互作用的时空尺度效应.结果表明：①各种ESs的时空异质性显著,空间分布格局整体表现出“以中部城市建成区为中心向四周辐射递增”的梯度模式；②珠三角成对ESs间以协同关系为主,相关系数的绝对值大多在2015年达到最低.供给服务与其他ESs之间的相互作用关系与强度显示出明显的尺度变异性和波动性,而调节与支持服务之间的显著协同关系不易受到尺度变化的影响；③在六边形格网、乡镇和区县尺度均识别出4类功能迥异的生态系统服务簇（ESBs）,其中包括3种同类型的ESBs：生态保育簇、农业生态簇和都市生态枯竭簇,以及3种不同类型的ESBs：生境质量簇、都市生态脆弱簇和都市农业维护簇.这些ESBs之间的转移在12 a间展现出近似对称的演变特征.研究结果可为区域生态环境治理和生态系统分区管理提供科学参考. |
| 英文摘要 |
| Accurately understanding ecosystem services （ESs） interactions across spatiotemporal scales is crucial for sustainable ecosystem management. We quantified the spatial heterogeneity of six ESs （i.e., water yield, soil retention, water purification, carbon sequestration, habitat quality, and food production） in the Pearl River Delta （PRD） from 2010 to 2022 using the InVEST model and socio-statistical methods. Based on this, the correlation coefficient method, geographically weighted regression model, and self-organizing feature mapping combined with K-means clustering analysis were employed to analyze the spatiotemporal scale effects of the interactions among these six ESs at three spatial scales, namely 1 km2 hexagonal grids, townships, and districts. The results showed that： ① The spatiotemporal heterogeneity of the six ESs in the PRD was significant. Except for soil retention, habitat quality, and food production, the other ESs showed an overall increasing trend over the past 12 years, and the overall spatial distribution pattern of ESs showed a gradient pattern of “increasing radiation from the central built-up area to the surrounding area.” ② The interactions among paired ESs in the PRD were primarily synergistic, with most of the absolute values of the correlation coefficients reaching their lowest values in 2015. The interactive relationships and strengths between provisioning services and other ESs exhibited obvious scale variability and fluctuation, whereas the significant synergistic relationship between regulating and supporting services was less susceptible to scale changes. ③ Four types of ecosystem service bundles （ESBs） with different functions were identified at both the hexagonal grid, township, and district scales, including three of the same type of ESBs： ecological conservation bundle, agricultural ecology bundle, and urban ecological depletion bundle, along with three different types of ESBs： habitat quality bundle, urban ecological fragility bundle, and urban agricultural maintenance bundle. Transfers between these ESBs exhibited approximately symmetrical evolutionary characteristics over the last 12-year period. The findings can provide scientific references for regional ecological environment governance and ecosystem zoning management. |
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