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通过对暖温带落叶阔叶林林冠上层能量特征的观测．得出太阳总辐射为 ３ ０９５～４ ３６８ ＭＪ· ｍ－２。 光合有效辐射１ ０３８． ３～ １３０５．４ ＭＪ· ｍ－２．年总辐射与年降雨量呈负相关（ Ｒ＝－０． ７２）总辐射最大的月份出 现在５月．直射辐射和有效光合辐射变化具有相同特点．季节和月变化较为平稳．呈单峰曲线．最大值一般出现 在５月或６月．
Through the observation of the energy characteristics of the canopy in warm temperate deciduous broadleaf forest. The total solar radiation is 3 095 ~ 4 368 MJ · m-2. Photosynthetic active radiation 1 038. 3 ~ 1305.4 MJ · m-2. The annual total radiation was negatively correlated with annual rainfall (R = -0.72) The month with the highest total radiation appeared in May. Direct radiation and effective photosynthetic radiation changes have the same characteristics. Seasonal and monthly changes are more stable. Single peak curve. The maximum usually occurs in May or June.