【摘要】 对湿地周围不同距离农田的近地面气温、湿度、地温以及典型湿地地温的测定表明 ,湿地冷湿效应与湿地植被及其积水深度有关。在所选择的 3种湿地植被中 ,漂筏苔草积水最深 ,冷湿效应最大 ,其次为毛果苔草 ,小叶章最小。不同距离农田的近地面气温和湿度变化不同 ,随距离增加 ,温度增大 ,湿度减小。这种变化主要是由湿地的局部冷湿作用造成的。农田地温平均值高出小叶章湿地 4℃之多 ,高出漂筏苔草湿地近 5℃ ,表明湿地的制冷作用很明显更多还原

【Abstract】 Wetland is a kind of important natural resource with enormous environmental functions and benefits.Cold-humid effect is one of the cumulative environmental effects of wetland.The study on cold-humid effect of wetland will help expose their eco-environmental effects from the angle of water and heat,and provide scientific bases for preservation and rational utilization of wetland.The testing results indicate that cold-humid effect is related to vegetation and seeper depth of wetland.Among the three types of vegetation in the study,i.e.Carex pseudocuraica,C.lasiocarpa and Calamagrostis angustifolia,the first has the deepest seeper and the biggest cold-humid effect.It is then followed by C.lasiocarpa and Calamagrostis angustifolia.The near-ground air temperature and humidity of farmland varied with the distance between farmland and wetland.With increase in the distance,the temperature increased but the humidity decreased,which is mainly the result of the cold-humid effect of wetland.The mean ground temperature of farmlands is 4 ℃ higher than that of Calamagrostis angustifolia wetland and 5 ℃ than that of C.pseudocuraica wetland,which is a significant evidence of the refrigeration effect of wetlands.更多还原