长白落叶松人工林不同林隙间伐对林下更新生长的影响

Effect of Different Sizes Gap Thinning of Larix olgensis Plantation on the Growth of Artificial Regeneration

以黑龙江省佳木斯市孟家岗林场长白落叶松为研究对象,采用3种林隙大小的间伐(5 m×5 m,7 m×7 m,10 m×10 m),在采伐区域用5个树种(柞树、红松、胡桃楸、云杉和水曲柳)进行人工更新,研究更新幼树的成活率、苗高、苗高生长量及地径的生长情况,试验结果表明:不同林隙大小对各更新树种苗木的生长有显著影响,10 m×10 m的林隙间伐更能促进林下更新的生长。

An experiment was thinned by 3 kind gaps（5 m ×5 m,7 m×7 m,10 m×10 m） in the Larix olgensis of Meng Jiagang forest in Heilongjiang province and artificial regenerated used 5 trees species（Xylosma racemosum、Pinus koraiensis、Juglans mandshurica、Picea koraiensis、Fraxinus mandschurica）,The results under investigating and analysing the growth of survival rate, ground diameter,seedling height and the growth show that： The effect of gap size on the growth of the regeneration were remarkable, the gap thinning of 10m×10m can promote the growth of regeneration.