Variable density yield model for teak plantations in the Northeast of Thailand

Material type: 図書

Author: Vacharangkura, Tosporn

Publisher: Japan International Research Center for Agricultural Sciences

Publication date: 2012-03-30

Material Format: Digital

Capacity, size, etc.: -

NDC: -

View All

Notes on use

Note (General)：: Variable density yield model for teak plantations in the northeast of Thailand was developed based on 85 temporary sample plots located in the 7 provi...

Search by Bookstore

Holdings of Libraries in Japan

This page shows libraries in Japan other than the National Diet Library that hold the material.

List of Cooperating Institutions and Databases

Please contact your local library for information on how to use materials or whether it is possible to request materials from the holding libraries.

other

Institutional repository of JIRCAS
Digital
You can check the holdings of institutions and databases with which 学術機関リポジトリデータベース（IRDB）（機関リポジトリ） is linked at the site of 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）.
Institutional repository of JIRCAS

Search by Bookstore

Bibliographic Record

You can check the details of this material, its authority (keywords that refer to materials on the same subject, author's name, etc.), etc.

Digital

Material Type: 図書
Title: Variable density yield model for teak plantations in the Northeast of Thailand
Author/Editor: Vacharangkura, Tosporn
Author Heading: Vacharangkura, Tosporn
Publication, Distribution, etc.: Japan International Research Center for Agricultural Sciences
Publication Date: 2012-03-30
Publication Date (W3CDTF): 2012-03-30
Periodical title: JIRCAS Working Report : Approach to Sustainable Forestry of Indigenous Tree Species in Northeast Thailand
No. or year of volume/issue: 74
Volume: 74
Pages: 33-40
ISSN (Periodical Title): PISSN : 1341-710X
Text Language Code: eng
Subject Heading: multiple linear regressions
site index
stand density
stand age
Target Audience: 一般
Note (General): Variable density yield model for teak plantations in the northeast of Thailand was developed based on 85 temporary sample plots located in the 7 provinces of the northeast i.e., Nakhon Ratchasima, Khon Kaen, Sakon Nakhon, Loei, Si Sa Ket, Ubon Ratchathani and Yasothon. The plots ranged in site index from 14 m to 30 m (dominant tree height at 30 years) and were measured for stand growth 1-4 times during the year 2000-2009. All of measurement plots provided 157 data sets for constructing the model. The estimation data consisted of 36 growth periods of stands ranging in age from 3 to 40 years. Multiple linear regression method was used to simultaneously fit prediction equations for stem volume, stand basal area, stand volume and stand density. An existing Mitscherlich model for dominant height growth fitted with the same estimation data was used to estimate site quality index of the stands. The models were evaluated both quantitatively and qualitatively. Correlation among error components of the prediction equation for stem volume as well as the equations for stand density, stand basal area and stand volume were strong and statistically significant and the mean biases for those estimators were positive. The presented system of models could serve for constructing variable density yield table of teak plantations that required stand level input data.
DOI: 10.34556/0002000283
Format (IMT): application/pdf
Source: jircas_working_report74-_33-40 （fulltext）
https://jircas.repo.nii.ac.jp/record/2000283/files/jircas_working_report74-_33-40.pdf
Access Restrictions: インターネット公開
Periodical Title: DOI
https://doi.org/10.34556/0002000273
Periodical Title (DOI): 10.34556/0002000273
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 国際農林水産業研究センター : 国際農研機関リポジトリ