中国热带静风区林缘水平热力特征的初步分析  

Horizontal thermal characteristics at forest edge in calm tropical region of China

作　　者：张一平[1] 马友鑫[1] 刘玉洪[1] 张克映[1] 

机构地区：[1]中国科学院西双版纳热带植物园,昆明650223

出　　处：《应用生态学报》2000年第2期205-209,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目!(39770141);中国科学院"九五"重大项目!(KZ951-A1-104-01);云南省自然科学基金资助项目!(97C093M)

摘　　要：利用我国热带静风区西双版纳橡胶林西南向边缘 1月的温度观测资料 ,探讨了昼间林缘区域热力特征及时空变化规律 .结果表明 ,在林缘存在着明显的热力效应 ;对地面温度的影响深度可至林内约 13m处 ,地面温度在林外 4.5m处达最高 ,气温则在林缘 ( 0m)出现最大 ;林缘附近热量的输送在数值和方向上存在较大差异 ,即林外热量从地面向空中输送 ;林内在午后与林外相反 ,热量由上 (林冠 )向下 (地面 )输送 ;林缘附近则在不同地点。The temperature measurement at southwest facing edge of a rubber forest was conducted in a calm tropical region of Xishuangbanna,Yunnan,China in January 1998,and the daytime thermal characteristics and their time space variations nearby the edge of the rubber forest were discussed.There was an obviously thermal effect at forest edge.The depth of edge influence on soil surface temperature was up to 13 m from the edge into the forest.Soil surface temperature reached its highest at 4\^5 m outside the forest.The highest air temperature occurred at 0 m of the edge.The heat transfer nearby the edge was quite different in number and in direction.Outside the forest,the heat was transferred from ground to air on almost daytime,while at interior of forest,was opposite after the noon.The heat was transferred from the rubber canopy to the ground.At the forest edge,such variation was complex,depended mainly on location and time.

关 键 词：林缘 热带 地面温度 热力效应 小气候 静风区 

分 类 号：S718[农业科学—林学]