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研究结果表明:地面辐射平衡全年为正值。6月份最大,占地面获得太阳短波辐射量的81%;12月份最小,占地面获得太阳短波辐射量的45%,变化规律与太阳高度角变化相一致。各分量的数量变化是相互制约。土层储留热量多年平均值有5个月为正值,7个月为负值。显热通量、潜热通量等分量的变化都与干湿季节变化有关,潜热消耗热量是显热消耗热量的6.9倍。地面辐射平衡以蒸发潜热释放到空气中占的比例最大,显热交换热量占比例较小,土层储留热量在各分量中占比例最小。
The results show that the radiation balance on the ground is positive throughout the year. The largest in June, accounting for 81% of the solar shortwave radiation on the ground; the smallest in December, accounting for 45% of the solar shortwave radiation on the ground, consistent with changes in the solar elevation angle. The quantity changes of each component are mutually restricted. The mean value of soil heat stored for many years is positive for five months and negative for seven months. The changes of sensible heat flux, latent heat flux and other components are related to the change of wet and dry seasons, and the latent heat consumption is 6.9 times of that of sensible heat. The radiation balance on the ground surface accounts for the largest proportion of latent heat released to the air, the proportion of sensible heat exchange heat accounts for a relatively small proportion, and the soil heat storage fraction has the smallest proportion among the components.