皖东丘陵马尾松人工林生长规律探讨

Stidies on the Growth Regulation of Masson Pine Stand in Eastern Anhui Province

研究皖东地区马尾松人工林树高、胸径和蓄积量的生长规律，结果表明：（１）不同地位级、不同密度的林分其树高、胸径和蓄积生长量在幼林阶段（８～１０年生之前）无明显差异，郁闭成林后，彼此差异显著；高地位级林分生长量显著大于低地位级林分。（２）林分蓄积生长量受密度制约，高地位级林分以稀植效果为佳，而低地位级林分以适当密植为好。

The growth regulation of height ,DBS and volume of masson pine stand in eastern Anhui Province were studied,The results showed :(1)The height ,DBS and volume of the stands in different site indexes and different densities had no significant differences before the age of 8-10,but after that age, there were significant differences .The height , DBS and volume of stands in high site index were greater than those of stands in lower site index.(2)The stand volume was closely related to density.In high site index stands ,the growth in lower density is fast ,while in the lower site index stands , the growth in higher density is fast.