次生林下红松幼树适生小环境研究

本研究以红松幼树及其周围最近4株相邻木组成的小环境结构单元为研究对象,研究了光照条件、土壤腐殖质层厚度、相邻木、直射光、上层树种、以及草本和灌木等6个环境因子对红松幼树生长的影响。结果表明,这6个环境因子均对林下红松幼树的生长有不同程度的影响。基于研究结果,本研究归纳了林下更新红松幼树适宜的生长环境条件,并提出了相应的营林建议,供生产实践参考。

Suitable Individual Growth Environment for the Young Trees of Pinus koraiensis under Natural Secondary Forest

Impacts on growth of young trees of Pinus koraiensis of 6 environmental factors of light condition, thickness of soil humus, direct sunlight, neighboring trees, upper canopy species, herbs and shrubs were investigated on the young trees of P.koraiensis and 4 closest neighboring trees which were considered the structural unit of the individual growth environment. Results indicated that the 6 environmental factors had effects, to various extents, on the growth of the young trees of P.koraiensis. Based on the findings, suitable growing conditions for the regenerated young trees of P.koraiensis under forest were identified and corresponding measures of silviculture were proposed for operational practice.