沼泽湿地局地小气候“冷湿岛”效应  

"Cold-Humidity Island" Effect of Marsh Wetlands on Localized Micro-Climate

作　　者：聂晓[1,2] 王毅勇[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,吉林长春130012 [2]中国科学院研究生院,北京100049

出　　处：《生态与农村环境学报》2010年第2期189-192,共4页Journal of Ecology and Rural Environment

基　　金：国家自然科学基金(40971026);中国科学院知识创新工程重要方向项目(KZCX2-YW-425;KZCX2-YW-Q06-03)

摘　　要：利用沼泽湿地及其周围旱田对比观测的方法,对沼泽湿地的局地小气候效应进行了研究。结果表明:与周围旱田相比,沼泽湿地近地层(0.5—5.0m)气温低,湿度大,具有显著的"冷湿岛"效应,且不同高度"冷湿"效应表现不同,越靠近地面,"冷湿"效应越明显。6—9月的野外试验结果表明,沼泽湿地的"冷湿岛"效应在7、8月比较明显;比较沼泽湿地和旱田温度、湿度的日变化发现,沼泽湿地在12:00—14:00的日间午后时段呈现出较明显的"冷湿岛"效应。By observing marsh wetlands and their surrounding dry farmlands for comparison, effect of marsh wetlands on localized micro-climate is analyzed. Results show that marsh wetlands, compared with their surrounding dryland, are lower in temperature but high in humidity in the surfaee layer, displaying a significant ＂cold-humidity island＂ effect, which varies with elevation. The closer to the land surface, the more significant the effect. The field observation from June to September found that the ＂cold-humidity island＂ effect was relatively more obvious in July and August. By comparing the marsh wetlands with the dryland around in diurnal variation of temperature and humidity, it was found that the effect was more significant during the time period between 12：00 and 14：00.

关 键 词：沼泽湿地 小气候 “冷湿岛”效应 

分 类 号：P931.7[天文地球—自然地理学] P463.2