【摘要】 通过对不同造林密度光皮桦人工幼林的生长效应进行分析,得出在光皮桦幼林阶段,造林密度不同其幼林的平均树高、平均胸径、单位面积材积差异不显著,应进一步观察研究其生长效应。更多还原

【Abstract】 The growth effect of different planting densities on young betula luminifera plantation isstudied.The results show that at the stage of young betula luminifera plantation,under different plantingdensities,there’s no distinct difference in the average height,the average diameter at breast height as wellas the volume of wood per unit area.And their growth effect should be future observed and studied.更多还原