一、前言建国以来,我省大力营造了人工杉木林,据一九七八年底统计,杉木人工林面积为4876860亩,其中幼、中龄林面积占96.3%。随着时间的消逝,需抚育间伐的林分越来越多,然而如今尚缺乏抚育间伐科学数量依据。由于森林经营强度的提高,定量间伐的需要,我们必须掌握林分生长马立木密度之间的数量关系,才能使抚育间伐工作有所科学依据。 I. Introduction Since the founding of the People’s Republic of China, our province has vigorously created artificial fir forests. According to the statistics at the end of 1978, the area of ​​artificial fir forests is 4,876,860 mu, of which 96.3% are young and middle-aged forest areas. As time passes, more and more stands need to be nurtured, however, there is a lack of scientifically justified thinning. Due to the increasing intensity of forest management and the need of quantitative thinning, we must grasp the quantitative relationship between the density of stand growth stand trees in order to make a scientific basis for tending thinning.