| Summary: | 碩士 === 國立中興大學 === 生命科學系所 === 105 === Taiwan''s urban area have varying degrees of urban heat island effect. Wetlands can provide microclimate regulation services, but there has been little study. Herein, we applied fixed measurements to accurately determine the cooling effect of wetlands. The research sites include 6 different types of wetlands: the Waziwei, Guandu, Huajiang, 52-jia, Cigu salt pan wetlands, and paddy fields in Xikou. The results showed air temperature was significantly lower in the wetlands than urban area, and the cooling effect was more obvious during nighttime than daytime. Guandu wetland and Huajiang wetland located in the Taipei City showed the most significant cooling effect (1-3 ℃), but little cooling effect duing daytime. The cooling effect of other wetlands was about 1-2℃. If cooling effect is based on the same population density, the 52-jia wetland and paddy fields in Xikou showed the highest cooling effect per capita. The relative humidity of all wetlands were significantly higher than that of urban area, and air temperature correlated significantly with relative humidity. The results showed the Huajiang wetland and Guandu wetland had the strongest cooling effect in their ambient area (1-2 ℃), and the cooling effect of the Waziwei wetland was only 0.5 ℃. The distance effect by the Huajiang wetland and Guandu wetland was 100-300 m. This study suggests wetlands could have cooling effect, depending upon the location of the wetlands and the time of the day.
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