State Key Laboratory of Environmental Criteria and Risk Assessment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu, State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Sci Total Environ. 2021 Oct 20;792:148290. doi: 10.1016/j.scitotenv.2021.148290. Epub 2021 Jun 5.
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 × 10 m to 1.47 × 10 m 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.
了解生态系统服务的变化及其驱动因素对于有效保护和恢复河岸生态系统至关重要。本研究采用综合生态系统服务价值与权衡模型，分析了 2007 年至 2015 年中国辽河流域保护区内与水相关的生态系统服务（土壤保持、水净化和产水量）的变化。通过逐步回归分析，分别确定了景观格局对不同恢复阶段（耕地弃置和自然演替阶段）的生态系统服务的影响。结果表明，在耕地弃置阶段，景观破碎度、景观多样性、耕地破碎度和草地聚集度增加。在自然演替阶段，景观聚集度和多样性增加，而耕地破碎度和草地破碎度降低。自耕地弃置以来，与水相关的生态系统服务有所改善，但从 2011 年到 2015 年，自然演替阶段的产水量从 1.57×10 m 减少到 1.47×10 m。耕地弃置和自然恢复阶段的产水量动态与景观指标均无显著相关性。耕地弃置阶段土壤保持和水净化服务的动态受景观斑块数量、耕地划分和草地聚集度的显著影响。不同斑块类型之间的分散和并列、耕地边缘密度、草地划分和草地聚集度在自然恢复阶段的土壤保持和水净化服务的动态中起着重要作用。研究结果为河岸带管理提供了科学指导，以更好地恢复与水相关的生态系统服务。
