中文摘要：

在 2009， 2010 和 2013 在 snowmelt 时期期间用一个自动气象站和雪溶度计在在阳光充足的斜坡(OPS ) 上并且在遮阴的斜坡(BFC ) 上的森林华盖坦诚下面的一个开的地点的这研究，气象学的因素和 snowmelt 率被测量。在雪表面上的精力预算根据这些气象学的数据集被计算。分析结果显示网短波放射(K) 和理智的热流动(H) 是精力来源，并且潜伏的热流动(LvE ) 根本是雪表面的精力水池地点。网 longwave 放射(L) 是精力水池在 OPS 和 80% BFC，而是精力在 20% BFC 采购原料。在 BFC 的 LvE 的 K， H，和损失的获得显然是比在 OPS 的那些低的。L 是在在 BFC 和 OPS 的雪表面之间廉价的精力的最大的差别。在温暖、湿的年里，在 OPS 的精力预算变化的最重要的因素是空气湿度，第二个很重要的因素是空气温度。然而，阳光充足的斜坡上的扎根的表面温度在 BFC 是为 L 和精力预算的最重要的因素。随森林华盖坦诚和邻近的地面的斜坡的增加，在雪上的 L 和精力预算上的阳光充足的斜坡上的地面表面温度的影响在增加的 BFC 出现，特别当阳光充足的斜坡上的雪盖子完全融化时。

英文摘要：

In this study, meteorological factors and snowmelt rate at an open site on sunny slope（OPS） and beneath forest canopy openness on shady slope（BFC） were measured using an automatic weather station and snow lysimeter during the snowmelt period in 2009, 2010 and 2013. The energy budget over snow surface was calculated according to these meteorological datasets. The analysis results indicated that the net shortwave radiation（K） and sensible heat flux（H） were energy sources, and the latent heat flux（LVE） was energy sinks of snow surfaces at all sites. The net longwave radiation（L） was energy sink at OPS and 80% BFC, but energy source at 20% BFC. The gain of K, H, and the loss of LVE at BFC were obviously lower than those at OPS. The L was the maximum difference of energy budget between snow surface at BFC and OPS. In warm and wet years, the most important factor of the energy budget variation at OPS was air humidity and the second mostimportant factor was air temperature. However, the ground surface temperature on the sunny slope was the most important factor for L and energy budget at BFC. With the increases in forest canopy openness and the slope of adjacent terrains, the influences of ground surface temperature on the sunny slope on L and the energy budget over snow surface at BFC increased, especially when the snow cover on the sunny slope melts completely.