摘要
在湘中丘陵区采取正交设计方法设置标准地,调查了1 302株样竹的重量、胸径和用材长度,分析了竹秆重量与胸径、用材长度的关系;选择一元回归方程W=aDb,编制了毛竹一元重量表;选择二元回归方程W=dDeHf,编制了毛竹二元重量表;经检验,编制的湘中丘陵区毛竹一元重量表和二元重量表的制表精度与适用精度均远远超过90%,说明其在湘中丘陵区适用。
Orthogonal design method was used to set sample plots of Phyllostachys pubescens in the hilly area of central Hunan. Data of 1 302 samples of bamboo were collected. And the relationship between weight and diameter at breast height, weight and length were analyzed. A regression equation of one variable, W = aDb, was used to work out the weight table of one variable of bamboo, and a re- gression equation of two variables, W = dDettf, was used to work out the weight table of two variables of bamboo. Through examining, the schedule accuracy and practicable accuracy of the weight tables were over 90%, which indicated that the tables were applicable in the hilly area of central Hunan.
出处
《湖南林业科技》
2012年第4期21-24,共4页
Hunan Forestry Science & Technology
关键词
毛竹
重量表
丘陵区
Phyllostachys pubescens
weight table
hilly area
