Abstract

Defining a multi-service spatial pattern and ecosystem packages is the key to ensuring regional ecological security and sustainable development. Ecosystem service bundles can effectively discern the interactions among multiple services and regionalize ecological functional zones. Aiming at a range of environmental and ecological challenges in the Beijing-Tianjin-Hebei region, such as water scarcity, soil erosion, land degradation, poor forest and grassland quality, and shrinking agricultural land, the spatial pattern and driving forces of eight crux ecosystem services, including product supply, soil conservation, water conservation, carbon storage, sand fixation, environment purification, biological diversity and recreation culture, were analyzed by combining multiple model algorithms. Additionally, spatial system clustering was employed to identify ecosystem services bundles and optimize the ecological functional zoning. The results revealed significant spatial heterogeneity of the eight ecosystem services in the Beijing-Tianjin-Hebei region. High product supply concentrated in plain regions, while the rest seven ecosystem services were dominant in in mountainous areas. The region can be classified into four service bundles: ecological conservation service (ECS), ecological restoration service (ERS), product supply service (PSS) and ecological fragile service (EFS). ECS and ERS are dominated by regulating and supporting services, which are primarily driven by climatic factors and NDVI. ERS exhibits relatively low service level and is the crucial area for future ecological restoration. PSS is dominated by food supply, with land use change being the primary driving force. At present, with the rapid urbanization, various ecosystem services provided by EFS is inadequate. In the future, urban ecological construction should be strengthened to enhance regional ecosystem services capabilities.

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