文献类型：期刊文献

中文题名：林木苗期生长灰色模型的选择

英文题名：The Selection of Grey Models for Some Tree Species in Seedling Stage

作者：杨耀仙[1] 卞尧荣[1] 姚小华[1]

第一作者：杨耀仙

机构：[1]中国林业科学研究院亚热带林业研究所

年份：1991

卷号：4

期号：2

起止页码：211-216

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：苗木;生长;灰色模型;选择

外文关键词：seedling growth; grey modeling

分类号：S723

摘要：对林木生长规律的分析往往借助于数学方法给予定量化描述。灰色系统自70年代末以来已发展成为一门新兴学科。它已在国家经济建设决策方面取得突破性进展,正在受到国内外学术界的关注。在林业上对有关树种的产量预测(以灰色建模为基础)已开始应用。为了探讨灰色模型在揭示林木生长动态规律中适合程度及不同模型的表现,我们选用4个常用灰色模型,并取S型回归模型作为对照,这有利于将灰色系统方法引入林业研究中。现将结果报道如下。
The seedling dynamic procedures of growth of some tree species, such as Pinus massoniana, P. elliottii, P. taeda, Camellia oleifera, Aleurites montana,A.fordii have been modeled with grey model and Stype curve model. The results show that there are different dynamic models of growth in the seedling stage of different tree species. GM(1,1) and S type curve models have broad adaptability in modeling growth of trees in seedling stage. There are different results for height growth of different tree species when using GM(1,1) and S type curve models. GM(1,1) model is preferable to S type curve model in the modeling for the thick growth near ground. GM(2,1) and GM(1,N) can been used unwillingly for modeling some tree species. The modeling results by using Verhulst model are the worst of seedling modeling for all tree species with grey model and S type curve model.