G2TT
来源类型Articles
规范类型论文
DOI10.1080/14728028.2003.9752470
ISSN1472-8028
Provisional equations for estimating total and merchantable volume of Tectona grandis trees in Costa Rica
Snook, L.K.; Lopez, C.
发表日期2003
出处Forests, Trees and Livelihoods 13(4): 345-359
出版年2003
语种英语
摘要

The aim of this study was to develop equations which best predict individual-tree total volume and mercahntable volume for T. grandis in Costa Rica. A total of 112 trees with ages between 2 and 47 years and breast height diameter (dbh) between 2.4 and 58.7 cm were felled for stem analysis. Linear and non-linear regression analyses were used to model the relaitonship of total volume with dbh, with dbh and total height, and with age. The study also included merchantable volume equations that estimate merchantable volume to a minimum top diameter or bole length. The equations tested in this study fitted the observed data well. Other models, developed elsewhere, tended to overestimate the stem volume, especially at dbh bigger or the same 30cm. General geometric cylinder volume equations combined with a Stem Form Factor of 0.45 (widely used for T. grandis) were less precise than regression models when applied to this data set. Model validation with an independent data set suggested that the models should be calibrated with local data when grat accuracy is required (error less than 10%).

主题regression analysis ; merchantable volume ; stem form ; form factors ; diameter ; height ; Tectona grandis
区域Costa Rica
URLhttps://www.cifor.org/library/1456/
来源智库Center for International Forestry Research (Indonesia)
引用统计
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/90482
推荐引用方式
GB/T 7714
Snook, L.K.,Lopez, C.. Provisional equations for estimating total and merchantable volume of Tectona grandis trees in Costa Rica. 2003.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Snook, L.K.]的文章
[Lopez, C.]的文章
百度学术
百度学术中相似的文章
[Snook, L.K.]的文章
[Lopez, C.]的文章
必应学术
必应学术中相似的文章
[Snook, L.K.]的文章
[Lopez, C.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。