Abstract
Understanding changes in ecosystem services and their drivers is important for effective riparian ecosystem conservation and restoration. In the study, changes in water-related ecosystem services (soil conservation, water purification, and water yield) from 2007 to 2015 in Liaohe River Reserve, China were analyzed using the Integrated Valuation of Ecosystem Services and Trade-offs model. Impacts of landscape patterns on ecosystem services for different stages of restoration, i.e., farmland abandonment and natural succession stages were determined by stepwise regression analysis, respectively. The results showed that landscape fragmentation, landscape diversity, farmland fragmentation and grassland aggregation increased at the farmland abandonment stage. Landscape aggregation and diversity increased, whereas farmland fragmentation and grassland fragmentation decreased at the natural succession stage. Water-related ecosystem services improved since farmland abandonment, but water yield decreased from 1.57 × 106 m3 to 1.47 × 106 m3 at natural succession stage from 2011 to 2015. Water yield dynamics both at farmland abandonment and natural restoration stages were not significantly associated with landscape metrics. Dynamics of soil retention and water purification services at the farmland abandonment stage were significantly affected by landscape patch numbers, farmland division, and grassland aggregation. Interspersion and juxtaposition between different patch types, farmland edge density, grassland division, and grassland aggregation played significant roles in the dynamics of soil retention and water purification services at the natural restoration stage. The results provide scientific guidance for riparian management at the landscape scale to better restore water-related ecosystem services.
Published Version
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