文献类型：期刊文献

中文题名：利用树冠竞争因子确定同龄间伐林分的断面积生长过程

英文题名：DETERMINING BASAL AREA GROWTH PROCESS OF THINNINED EVEN AGED STANDS BY CROWN COMPETITION FACTOR

作者：唐守正[1] 杜纪山[1]

第一作者：唐守正

机构：[1]中国林业科学研究院资源信息研究所

年份：1999

卷号：35

期号：6

起止页码：35-41

中文期刊名：林业科学

外文期刊名：SCIENTIA SILVAE SINICAE

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：树冠竞争因子;断面积;生长模型;间伐;林分;生长

外文关键词：Crown competition factor, Basal area, Growth model, Thinning

分类号：S758.5

摘要：断面积生长预估是林分生长和收获预估体系中的核心因子和基础。本文选用了包含林分密度指标、年龄和立地质量指标的Ｒｉｃｈａｒｄｓ 模型作为断面积生长模型。利用树冠竞争因子（ ＣＣＦ） 能稳定反映林分竞争水平的特性，建立了ＣＣＦ 与林分密度指数和单位面积林木株数之间的函数关系式，并对长白落叶松和杉木得出：（１） ＣＣＦ＜ ２００ ，林分为等株数生长；（２）２００ ≤ＣＣＦ≤３００ 时，为等株数生长向自然稀疏生长的过渡期，该期间林分密度指数的变化可用等株数生长和自然稀疏生长的线性组合来表达；（３） ＣＣＦ＞ ３００ 时。
The basal growth prediction is a kernel factor and foundation in the model system of stand growth and yield prediction. Richards Growth Model including stand density index, age and site quality index was taken as basal area growth model. The functional relationship was developed between Crown Competition Factor ( CCF ) proposed by Krajicek et al. and stand density index by Reineke and number of trees per hectare by using the characteristic of CCF reflecting tree competition in stand to certain degree. According to the function, the conclusions for L. olgensis and C. lanceolata are as follows; 1) CCF<200 , showing stand growth with constant tree number; 2) 200≤ CCF ≤300, transition of growth from constant tree number to the self thinning, in other words, the change of SDI (stand density index) can be described as linear combination of the growth with constant tree number and the self thinning; (3) CCF>300 , stand growth in the self-thinning.