Quantifying the cooling effect of urban wetland systems in arid regions: A stable isotope approach

Meteorological Data: The meteorological data collected from the Zhangye National Wetland Park, including air temperature, humidity, and wind speed, provide essential insights into the climatic conditions that influence evapotranspiration and the cooling effects of the wetland ecosystems throughout different seasons.Isotope Data: The stable isotope data serve as critical indicators for tracing water vapor sources and quantifying the recycling processes within the “water body-woodland-grassland” composite ecosystem, facilitating a deeper understanding of moisture dynamics and their role in local climate regulation.Cooling Effect Quantification Results: The analysis of cooling effects demonstrates that the composite wetland system achieves significant temperature reductions, with a peak cooling effect of 1.71°C during the summer months, underscoring the ecological importance of wetlands in moderating extreme heat events in arid regions.