杉木人工林生长过程表编制的研究*

利用近些年来在南方１４省（区）有关单位搜集的杉木人工林（实生）标地４４６５块材料，以杉木带、区及地位指数表为分类基础，编制了５组杉木人工林生长过程表（南带，北带及中带东区、中区、西区各编一组）。各表标准差大部分在±５％以下，最大不超过±７．８％。并根据各带、区生长过程表，提出经营意见及间伐、主伐年龄。

Establishment of Stand Growth Tables for the National Chinese Fir Plantations

Making use of the data of 4 465 sample plots of Chinese fir plantation(seedling crop),which were collected all over China during the recent years and taking the site index tames of various Chinese fir belts and areas as the foundation for classification,5 groups of stand growth table of Chinese fir plantation (each of the south belt,north belt,and east,middle and west areas of the middle belt was classified as a group)were established.The precision of each table was high and most of their standard deviations were lower than ±5% with the largest no more than ±7.8%. In addition,the managerial suggestions and thinning and harvest cutting age were put forward based on the growth tables of various Chinese fir belts and areas.