摘要
对宜昌县防护林的地理区位与立地类型特征调查，采用模糊聚类分析法对立地类型进行划分，并由理查德方程和数量化理论Ⅰ模型得出编制该地立地指数的预测方程为：Ｙｉ＝８．０４＋３．６１Ｘ１１＋１．４６Ｘ１２＋１．０８Ｘ５１＋１．０１Ｘ５２＋２．１６Ｘ６１＋２．５２Ｘ６２－０．８７Ｘ８１＋０．７７Ｘ８２＋１．１８Ｘ８３＋０．６０Ｘ８４－０．２６Ｘ８５－１．１０Ｘ９１＋０．２０Ｘ９２，所调查的１１个样地的立地质量等级为１３ｍ以上为好，１１～１３ｍ为中等，１１ｍ以下为差。从而建立了宜昌县防护林立地分类与评价系统，为长江防护林工程建设提供了科学依据。
Based on the investigation of the geographical district and site type characteristics of the protection forest in yichang County, Site Classification and evaluation system of the protection forest was established by means of Fuzzy Cluster, Richard growth equation and qantitative theory Ⅰ The studies provide the scientific basis for the construction of Yangtze River protection forest peoject
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
1998年第2期79-82,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家"八五"攻关项目
关键词
防护林
立地分类
评价系统
模糊聚类分析
Richard growth equation
Quantitative theory Ⅰ
Fuzzy cluster
Site classification and evaluation system
