摘要
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．
Energy characteristics above stand canopy in warm temperate zone deciduous broad-leaved forests were observed. Gross radiation is 3 095 ~ 4 368 MJ. m-2. photosynthetic active radiation (PAR) l 038. 3 ~ 1 305.4 MJ. m-2. Gross radiation per year is reversibly related to annual precipitation. and the correlation coefficient is R=-0.72. Monthly maximum gross radiation is in May. The trends of direct radiation and PAR are similar. seasonal and month changes are smooth. show mono climax curve. maximum value was in May or June
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2001年第3期40-43,共4页
Journal of Northeast Forestry University
基金
中国科学院知识创新工程
国家自然科学基金项目(39893360)
