【摘要】 应用热量平衡原理 ,探讨了陕西淳化县油松及侧柏人工幼林的热量平衡规律。结果表明 :4～ 5月份 ,油松和侧柏人工幼林的净辐射能分别为 6 2 .6 1～ 6 6 7.47W/ m2 和78.71～ 6 37.2 3W/ m2 ,油松林的乱流热交换量、土壤热通量、潜热通量分别为 1 7.0 7～2 0 2 .34、5 .48～ 1 5 .1 3、36 .81～ 45 7.2 5 W/ m2 ,侧柏林分别为 2 4.94～ 2 48.31、 6 .0 8～2 1 .1 1、40 .0 7～ 378.44W/ m2 。在相同条件下 ,该区油松林的耗水量大于侧柏林更多还原

【Abstract】 The thermal balance of Pinus tabulaeformis and Platycladus orientalis plantation was studied according to the energy balance principle . The results showed that the net radiations of the P.tabulaeformis and P.orientalis plantation were 62.61~667.47 W/m 2 and 78.71~637.23 W/m 2 respectively during April to may. The turbulent flow exchange,soil thermal and evapotranspiration of P.tabulaeformis were 17.07~202.34 W/m 2,5.48~15.13 W/m 2 and 36.81~457.25 W/m 2, and 24.97~248.31 W/m 2, 6.08~21.11 W/m 2 and 40.07~378.44 W/m 2 for P. orientalis . The evapotranspiration of Pinus tabulaeformis is more than that of Platycladus orientalis in this area under the same conditions.更多还原