【摘要】 在两种除组成和垂直结构外,其它条件均相同的人工阔叶红松林内,做了总辐射、反射、透射、生物量、生产力和林分叶面积的测定。证明在红松与阔叶树复层混交,叶面积指数为5.5的林分内,光能利用率,林分的生物量、生产力和叶面积分布等均较二者单层混交,叶面积指数为4.1的林分为高或者合理。其原因在于前者能有效地吸收和利用太阳辐射能,减少能量的散失,该林分较高的叶面积指数也是提高其林分的生长速度和森林生产力的重要原因。更多还原

【Abstract】 The differences in forest structure display significant functions. In two different structured Korean pine stands, the global radiation, reflection, penetrance, biomass, productivity and leaf areas have been analyzed in the eastern mountains of the Northeastern China (N15°23′—26′, E127°36′—39′). It is identified that the productivity and biomass of "doublelayered forest" is higher than that of "singlelayerd forest", even though they grow in the same site, expose to the same enviroment, and receice the same rediation input. The main reason for this is that the doublelayered forest can effectively absorb and ultilize the light energy, highly accumulate organic matter in the stand and vertically distribute relatively large amount of leaf area. Those can attribute to the ratioal structure of doublelayered Korean pine Forest.更多还原