摘要
以lgH=a+b A等6个数学模型拟合收集到的166块思茅松人工林标准地优势木树高导向曲线,结果选用拟合效果较好的Richards函数模型:H=26 6907(1-e-0 049999A)0 9515编制地位指数表。基准年龄为20年,用标准差调整法导出思茅松人工林11～23间7条地位指数曲线,经连续树高值检验、落点检验,结果表明,该地位指数表编制精度为91 1%,可用于思茅、版纳等地区的思茅松人工林立地质量评价和生长过程预测。
Site index table is an effective way for evaluating the capacity of forest land. Taking the tree height curve of 166 plots of Pinus kesiya plantation as reference, the site index table was worked out by using Richards function model H=26.6907(1-e^(-0.049999A))^(0.9515). The datum age is 20 years, seven site index curves of Pinus kesiya plantation were developed by using the method of standard deviation adjustment. Tested by continuous tree height and the point of fall, the results showed that the site index table had promising precision, and it could be used on Pinus kesiya plantation site evaluation and forecast of growing process.
出处
《林业调查规划》
2004年第1期5-9,共5页
Forest Inventory and Planning
