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当前位置: 首页 > 文章 > 间伐林分的断面积生长模型研究 林业资源管理 2004 (3) 53-56
Position: Home > Articles > Study on Basal Area Growth Model for Thinned Stands Forest Resources Management 2004 (3) 53-56

间伐林分的断面积生长模型研究

作  者：
李春明;杜纪山;张会儒
单  位：
国家林业局退耕还林办公室;中国林业科学研究院资源信息研究所
关键词：
间伐;断面积;模型
摘  要：
利用Richards和Schumacher模型对人工落叶松和杉木林分进行断面积模型的拟合,结果表明:两种模型在同时选择单位面积株数或同时选择林分密度指数作为自变量时,Schumacher式都比Richards式拟合和预估效果好。Richards式用林分密度指数比用单位面积株数的拟合和预估效果明显要好,Schumacher式用林分密度指数比用单位面积株数拟合效果略好。在生产实践中,由于单位面积株数容易测定,而Schumacher形式比较简单,建议用来预估林分的断面积,并可作为间伐和未间伐林分的兼容模型。
译  名：
Study on Basal Area Growth Model for Thinned Stands
作  者：
LI Chunming~1,DU Jishan~2,ZHANG Huiru~1 (1.Research Institute of Forest Resource Information Techniques, CAF, Beijing 100091,China; 2.Office of Returning Farmland to Forest, State Forestry Administration, Beijing 100714,China)
关键词：
thinning, basal area, model
摘  要：
With different independent variables being selected, Richards growth model and Schumacher growth model were used to simulate the basal area of Larynx lenses and Cunningham lancelet plantation and the simulant result were compared with correlation coefficient and simulant precision. The result showed that Schumacher model was better than that of Richard model whether the number of trees per hectare or stand density index (SDI) was included in both models at the same time. Richards growth models with stand density index (SDI) as an independent variable had obviously better performance than those with the number of trees per hectare. Schumacher growth models with stand density index (SDI) as an independent variable had slightly better performance than those with the number of trees per hectare. Because the number of trees per hectare was easily measured and Schumacher growth model is simple, it was suggested that the model be used to predict the basal area in practice and also as compatible model for thinning and control.

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