杉木人工林的温湿效应

以连续多年的定位测定数据,研究了杉木人工林的温湿效应.结果表明:由于杉木林冠层的作用,使杉木林内形成了温度变化平缓,林冠层对地表温和土温的调节作用远大于气温;由于冠层的阻滞作用,使林内风速很小,乱流交换较弱,林木蒸腾蒸发的水气不易散失,造就了林内水气充沛、空气湿润的特征;杉木林内显热能的日平均波动在2%,杉木林内环境的潜热能占总温湿能的8%左右;杉木林具有这样的温湿特征是杉木林的结构特征、杉木林生理功能与环境相互作用的结果.

Efficiency of Temperature and Humidity in the Chinese Fir Plantation

Based on the observed date, the efficiency of temperature and humidity of Chinese fir plantation has been analyzed. The results show that temperature changes peaceably inside the Chinese fir plantation; The adjustment efficiency on air temperature was smaller than that of ground temperature and soil temperature; Owing to the delay of airflow by leave and branches in the canopy, the wind speed and exchanging heat are slim, the water vapor lose disadvantageous that the air was wet, in inside stand; The daily average change of appearance is smaller than 2%, the latent heat accounting for 8% percent of total warm-wet energy. Such features of temperature and humidity are caused by the interaction among its structural features, wood physiological function and the environment.