Unveiling the characteristics of water conservation variations in peatland watershed under climate change with an enhanced SWAT model

In the context of global climate change, the ecosystems' water conservation (WC) function has been significantly affected, particularly in peatland watersheds. This study focused on the Zoige peatland, a vital ecological barrier in the source region of the Yellow River (SRYR), to evaluate the dynamic changes in WC under various climate change scenarios. By improving the SCS-CN method in the Soil and Water Assessment Tool (SWAT) and integrating downscaled high-resolution meteorological data, this study quantitatively analyzed the contribution of WC to runoff (CWCR) and its spatiotemporal variation. Results indicated that from 1970 to 2023, the average precipitation, WC, discharge, CWCR, and WCR (WC rate) in the study area were 769.6 mm, 481.6 mm, 0.0049 m3/s, 91.28%, and 0.62, respectively. WC exhibited a strong positive correlation with precipitation (R2 = 0.9498). Under the high radiative forcing scenario (SSP585), the region was projected to experience a hotter and wetter climate, enhancing WC functionality overall. However, the frequent occurrence of extreme weather events and ecosystem degradation will significantly weaken the regulation capacity of the region's WC functions. This study provides technical support for ecological restoration and adaptive management of peatlands.

• Publication year

  2026

• Venue

  Water Policy

• Publication date

  2026-02-13

• Fields of study

  Not labeled

• Identifiers
  DOI 10.2166/wp.2026.027
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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