<正>研究晴好天气下城市次生栎林热量收支中各项的昼变化 ,结果表明它们与太阳辐射的日变化相似呈单波形 ;同时 ,相同时刻中净辐射值达太阳辐射值的 60 %以上才能保证林地获得热量 ,潜热和显热量占净辐射的 88%以上。

The daytime variation of the heat balance in the secondary oakery has been analyzed in the weather of cloudless and partly cloudiness.The results indicate that daytime changes of the income and outputs of the oakery heat have analogy with the diurnal variation of the receiving solar above the canopy:it is a single wave model.When the net radiation is over 60% of the solar radiation,it supplies the soil heat storage.The expenses of the latent heat and the sensible heat are over 88% of the net radiation in the same moment.