摘要
对油茶复合林总辐射能量的垂直分配规律进行了探讨，结果表明：林分不同层次上光辐射具明显规律性，全年抵达林冠层、黄花菜层和黄连层的总辐射分别为：４２２７．９．６５３．３、３８２．０ＭＪ·ｍ－２；一年中的光辐射林冠上层变幅较大，而下面植物层面却相对稳定；林冠的吸收、反射和透射特性与冠层发育状况关系密切；复合植冠层的辐射特征与单一林冠层的不同；总辐射日变化在各层次均表现为单峰曲线。
The vertical distribution of radiation energy in complex stands of oiltea camel-lia, Camellia oleifera, comprising, besides the top layer of oiltea cameilia ,the mid layer ofChinese goldthread, Coptis chinensis, and the bottom layer of citron daylily, Hemerocalliscitrina, was studied. Results are presented as follows. The annual amount of solar radiationreaching the top layer, the mid layer, and the bottom layer was 4227. 9 MJ/m2, 653. 3 MJ/m2, and 382. 0 MJ/m2 , respectively. In the course of the year radiation on the top layer var-ied greatly with the month and the season, but the radiation below the top layer remainedrelatively stable. Just as the absorptance, reflection, and transmittance of the top layerchanged markedly with its degree of development, so the radiation of complex stands differedconsiderably with that of one-layer stands. And the daily change of gross radiation in eachlayer took on the form of singlepeak curves.
出处
《经济林研究》
1996年第2期4-6,共3页
Non-wood Forest Research
关键词
油茶
辐射能量
垂直分配
冠层
Camellia oleifera
Radiation energy
Vertical distribution
Canopy layer.
