林下光照条件与红松幼树生长的相关性研究  

CORRELATIVITY OF THE GROWTH OF YOUNG KOREAN PINE AND THE CONDITION IN THE FOREST

作　　者：刘传照[1] 李俊清[1] 金奎刚[1] 

机构地区：[1]东北林业大学

出　　处：《东北林业大学学报》1991年第3期103-108,共6页Journal of Northeast Forestry University

摘　　要：在东北林业大学的凉水林场经过3a(1986年—1988年)的生态因子观测、红松幼树生长量调查及红松幼树的模拟遮光试验,表明林下光照条件与红松幼树生长的关系极为密切。生长在林下的红松幼树对光照的要求比其它任何生态因子都具有更大的依赖性。在其它环境条件完全一致的情况下,人为降低光照使红松幼树生长骤然减慢。光照条件对红松幼树生长的影响不仅在于生长季,也在于非生长季,且后者比前者的影响效果更显著。红松幼树的生长随年龄的增大其需光量逐渐增强,因此,在经营红松人工林及杨、桦等次生林时,应遵从红松这一生物学特性,及时抚育,逐渐加大透光疏伐的强度,以满足红松幼树生长的需要。The correlativity of the growth of young korean pine (Pinus koraiensis) and the condition of light in the forest was studied for three years in birch—poplar forest in Liangshui Experimental Forest Farm attached to Northeast Forestry University since 1986. The growing speed of young korean pine was investigated, and the analogue covering experiments were also carried out. The results show that the growth of young korean pine is close relatedto the conditions of light in the forest. The growth of young korean pine have more reliance on light than any other ecological factors. The growing speed of young korean pine becomes obviously slow when the illuminance is reduced with the other factors unchanged. The conditions of light affect the growth of young korean pine not only in growing season, but also in disgrowing season. Comparing to growing season, the affection in disgrowing season is more significant. With the growing of young korean pine, the necessity of light increases progressively. It is concluded that this character of young korean pine should be accorded in managing artificial korean pine forest and poplar-birch secondary forest, reproducting immediately, increasing the intensity of canopy-opening operation progressiveiy in order to make up with the need of the growth of young korean pine.

关 键 词：红松 幼树 光照条件 相关性 生长 

分 类 号：S791.247[农业科学—林木遗传育种]