东平湖周边城乡与人工林的温湿效应研究

Temperature and Humidity Effect of Surrounding Towns and Plantation of Dongping Lake

采用便携式自动观测气象站,测定了东平湖周边城乡与人工林的温度、湿度、光照强度,分析了湖体周边城乡与人工林的温湿度差异及原因,结果表明:(1)湖泊周边城乡温度及湿度的波动受湖泊影响,表现为距湖较近的城乡波动较大,距湖泊不同距离的人工林的温湿度变化同样是近湖泊处波动较大,这种变化主要是由湖泊湿地的冷湿效应造成的;(2)距湖泊相同距离的人工林与城乡相比,城乡的温度明显高于人工林,但人工林在上午9:00—10:00时温度增加值最大,达3.4℃,而城乡在上午10:00—11:00时增加值最大,为2.8℃,人工林温度表现出较大的波动性;(3)在上午9:00之前人工林的大气相对湿度大于城乡,9:00之后则明显低于城乡,而城乡的大气相对湿度变化较小,说明植被对湖泊的冷湿效应有调节作用。

The paper measured the temperature,humidity and the intensity of sunlight of surrounding towns and plantation of Dongping Lake by using portable automatic observation meteorological station and analyzed the differences of temperature and humidity of the surrounding towns and plantation of the lake and the reasons. The outcomes show that a) the fluctuations of temperature and humidity of the surrounding towns are affected by the lake. It shows that the fluctuation of the town which is closer to the lake is greater and the variations of temperature and humidity of poplar plantation in different distances to the lake also show the closer the greater. The variation is mainly caused by cold and wet action of wetland of the lake; b) comparing with the plantation and town that are in the same distance to the lake,the temperature of town is obviously higher than that of plantation,but the maximum increasing value of temperature of plantation at 9: 00-10: 00 a.m. is 3.4 ℃ and the maximum increasing value of temperature of town at 10: 00-11: 00 a.m. is 2.8 ℃,showing greater fluctuation of plantation and; c) before 9:00 a.m.,the relative humidity of atmosphere of plantation is greater than that of town,after 9: 00 a.m.,the relative humidity of atmosphere of plantation is obviously lower than that of town and the variation of relative humidity of atmosphere of town is smaller,showing the vegetation has an important function in cold and wet effect regulation of the lake.