不同间伐强度对思茅松人工林的生长效应研究

Study on the growth effect of Different Thinning intensities of Pinus kesiyaPlantation

通过对景谷试验示范林场12年生的思茅松人工林开展不同间伐强度的试验,结果表明:(1)通过抚育间伐,能促进思茅松树高、胸径的生长,随着间伐强度的增加,林分平均胸径、平均树高也随之增大;(2)思茅松人工林中龄林采用30%的间伐强度,保留木为1428株/hm2较为适宜。

Carring out different thinning intensity experiments of 12 years old Pinus kesiya plantation in Jinggu experiment demonstration forest farm,the results show that （1） by thinning, can promote Simao pine tree high, diameter growth. With increasing thinning intensity, the mean DBH and mean tree height inereases （2） the immature timber of Pinus kesiya planta- ti0n after the thinning intensity 30%, and retention of wood for the 1428trees / hm2 is more suitable.