摘要
以平均高为自变量，采用有约束的非线性最小二乘法建立林分最大蓄积量预估模型，结合形高模型，编制了杉木人工林标准表。为便于生产应用和生长预测，还建立了平均高和优势高的对等转换模型，配合地位指数曲线模型，导出了可变疏密度收获表。
The standard table of Cunninghamia lanceolata Plantations was compiled by taking the average height as an independent variable,adopting the restricted nonlinear least square method to set up the estimative model of stand maximum stocking and combining the form height model .In order to convenience the productive application and growth prediction,the equipotent transformation model of the average height and dominant height was also set up and in combination with the site-quality index curve model,the yield table with the changeable closeness degree was derived.
出处
《福建林业科技》
北大核心
1998年第2期24-27,共4页
Journal of Fujian Forestry Science and Technology
关键词
杉木
标准表
平均高
Cunninghamia lanceolata
Standard table
Average height
