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    基于多源数据的京津冀地区生态系统服务价值评估及空间格局研究

    Assessment and spatial pattern investigation of ecosystem service value in the Beijing-Tianjin-Hebei region based on multi-source data

    • 摘要: 京津冀地区是我国经济发展格局中最具发展活力和增长潜力的前沿阵地。加强对京津冀地区生态系统服务价值(ecosystem service value,ESV)评估研究,对京津冀地区协同发展具有重要意义。该文基于修正的ESV评估模型,利用京津冀地区地表覆盖数据和遥感数据,采用地理空间网格作为基本表达单元开展ESV评估。结果表明: ①2020年京津冀地区存在的ESV总量为9 822.5亿元,在空间上呈现“西北高、东南低”格局; ②从提供服务类型来看,2020年京津冀地区不同生态系统服务功能价值量差异较大,调节服务ESV在区域ESV中占主导地位; ③从行政区域来看,河北省贡献了全区域的近80%,“生态高地”与“经济洼地”的空间错位,成为制约区域高质量协同发展的核心瓶颈; ④京津冀各区县样本的相关性分析,揭示了ESV空间格局不仅是自然条件的结果,也是人类发展活动与活动强度在空间上的映射。该研究结果可为划定京津冀生态补偿分区及制定生态补偿标准提供决策参考。

       

      Abstract: The Beijing-Tianjin-Hebei region enjoys the greatest economic vitality and the highest growth potential across the economic landscape of China. Intensifying the ecosystem services value (ESV) assessment is critical to the region's coordinated development. Using a modified ESV assessment model and relevant land cover and remote sensing data, this study assessed the ESV of the region by taking the geographic space grid as the basic expression unit. The results indicate that the total ESV of the region in 2020 amounted to RMB 982.25 billion. Spatially, the northwestern part of the region presented higher ESV than its southeastern portion. From the angle of service types, the ESV of the region varied significantly across different ecosystem service functions in 2020, with the ESV of regulation services predominating. From the perspective of administrative divisions, Hebei Province contributed nearly 80% of the regional ESV. The spatial mismatch between "ecological highland" and "economic depression" emerged as a core constraint on the high-quality coordinated development of the region. The correlation analysis of samples from various districts and counties in the region reveals that, besides resulting from natural conditions, the spatial pattern of ESV represents a spatial reflection of human development activities and their intensity. Overall, the results of this study can provide a reference for making decisions about how to determine ecological compensation zones and formulate ecological compensation standards for the Beijing-Tianjin-Hebei region.

       

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