摘要
根据全国各带、区，各指数级杉木林分生长过程表，编制了８～２２指数级相应的间伐表共５组（即南带，北带，中带东区、中区和西区）。利用５３块间伐标地材料，以ｙ＝ａ＋ｂｘ模型，求出间伐后的平均高和平均胸径的回归经验式。该表与利用杉木林分密度管理图编制的间伐表进行检验比较，误差在１．９％～２．６７％之间。间伐开始期，则视初植密度的大小，与指数级的高低而异。间伐终止期，一般为１５ａ，最大不超过１８ａ，且与初植密度和指数级无关。
Based on the stand growth tables of the national Chinese fir plantations,the tending thinning tables for different site index of Chinese fir in various belts and areas in China were established. Make use of the data of 53 sample plots of Chinese fir tending thinning experiment and take y=a+bx as the mathematical model,the regression equation for the average tree height and average breast diameter after thinning was found out .Besides,make use of the tending thinning table established by the stand density control diagram of Chinese fir plantation, a precision comparison was conducted.
出处
《林业科学研究》
CSCD
北大核心
1996年第2期152-157,共6页
Forest Research
基金
国家"七五"科技攻关"杉木人工林集约栽培技术"专题内容之一
关键词
杉木
人工林
间伐表
生长过程表
Chinese fir plantation, tending thinning table, stand growth table
