一、定量间伐的科学性通过用材林基地的调查,我省能造杉林总面积达6002万亩,最适宜区占2132万亩,适宜区占3000万亩,较适宜区占870万亩,占全省林业用地面积的1/3。如何把它培育成速生丰产优质林分,抓好成林抚育间伐这一环节是必不可少的。传统的定性间伐是以林 First, the science of quantitative thinning Through the investigation of timber base, the province can create a total area of ​​60,200 hectares of Chinese fir, the most suitable area of ​​21.32 million mu, suitable area of ​​30 million mu, the more suitable area of ​​8.7 million mu, accounting for Provincial forestry land area of ​​1/3. How to cultivate it into high-yielding fast-growing high-quality forest, do a good job in the forefront of cutting tending this link is essential. The traditional qualitative thinning is based on forest