辽东山区不同立地因子对落叶松人工林胸径生长的影响

Effects of Different Site Factors on DBH Growth ofLarix gmelinii Plantations in Mountain of Eastern Liaoning Province

以辽东山区落叶松人工林为研究对象,通过对不同海拔、不同土壤厚度、不同坡向的落叶松胸径平均生长量的测定,对影响落叶松人工林生长的因子进行了分析,结果表明:在一个立地因子发生变化,其他立地因子相同时,落叶松胸径的平均生长量随之变化,并且随样地海拔的升高而降低,随土壤厚度的增大而升高,随坡向往东南而升高,往西北而降低。

Taking Larix gmelinii plantations in the eastern mountainous area of Liaoning Province as the research objects,the factors affecting the growth of Larix gmelinii plantations were analyzed by measuring the average growth of DBH at different altitudes,different soil thicknesses,and different slope directions.When a site factor changes and other site factors are the same,the average growth of DBH of Larix gmelinii changes with it,and decreases with the elevation of the plot,increases with the increase in soil thickness,and goes southeast with the slope.But it rises,it goes down to the northwest.