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- H21I-06: Adaptive Responses and Thresholds of Carbon and Water Fluxes in Urban Forests Under Drought and Heat Stress (highlighted)
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NOLA CC
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Jinhui Jeanne Huang, Nankai University (First Author, Presenting Author)
Tuqiang Chen, Nankai University
Urban forests help cities stay resilient in a changing climate by cooling the air, capturing carbon dioxide, and managing water flows. However, urban growth and climate change can stress these forests, especially during droughts and heatwaves. Our research studied how trees in an urban forest in China exchange carbon and water with the environment. We found that urban forests perform similarly to natural forests in capturing carbon and using water. Interestingly, during drought conditions, urban trees increased their water use and carbon uptake, showing their adaptability. We also discovered specific thresholds for heat, radiation, and dryness—when these limits are crossed, the forest's responses become stronger. Understanding these thresholds helps city planners design better urban green spaces to cope with extreme weather, making cities safer and more equitable for all residents.
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