摘要
利用广南县306块标准地资料和41株解析木资料,对多个树高生长模型进行比较分析,选择生长函数H=a+blnA作为该县杉木人工林优势高生长模型.分析优势高生长过程,结合杉木人工林不同年龄林分平均树高分布情况,采用树高的估计量标准误差为分配单位,调整各级指数曲线间距,编制了广南县立地指数表.分析结果表明,所编杉木人工林立地指数表精度较高,适用性强.
Using the data of 306 sample plots and 41 anatomic trees, through comparative analysis on several growth models, H = a ＋ blnA was chosen as dominant height growth model of Cunninghamia lan- ceolata plantation in Guangnan county. On the basis of analyzing dominant height growth, combining with the distribution of average tree height in plantation of different ages, adopting the estimated standard error of height as assignment unit, adjusting the distance between indexes of different grades, the C. lanceolata site index table in Guangnan county was compiled. The analysis results indicate that the compiled table with high precision and applicability.
出处
《林业调查规划》
2009年第5期7-12,共6页
Forest Inventory and Planning
关键词
立地指数表
杉木人工林
树高估计量标准误差
site index table
Cunninghamia lanceolata plantation
estimated standard error of height
