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Variable density yield model for teak plantations in the Northeast of Thailand
https://doi.org/10.34556/0002000283
https://doi.org/10.34556/00020002836abf2574-9b11-42da-b968-755f5458e200
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
jircas_working_report74-_33-40 (743KB)
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| Item type | 国際農研デフォルトアイテムタイプ（フル）(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-05-30 | |||||||
| タイトル | ||||||||
| タイトル | Variable density yield model for teak plantations in the Northeast of Thailand | |||||||
| 言語 | en | |||||||
| 作成者 |
Vacharangkura, Tosporn
× Vacharangkura, Tosporn
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| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 主題 | ||||||||
| 主題 | multiple linear regressions, site index, stand density, stand age | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 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. |
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| 言語 | en | |||||||
| 出版者 | ||||||||
| 出版者 | Japan International Research Center for Agricultural Sciences | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_3248 | |||||||
| 資源タイプ | book part | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.34556/0002000283 | |||||||
| ID登録タイプ | JaLC | |||||||
| 関連情報 | ||||||||
| 関連タイプ | isPartOf | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | https://doi.org/10.34556/0002000273 | |||||||
| 関連名称 | Approach to Sustainable Forestry of Indigenous Tree Species in Northeast Thailand | |||||||
| 収録物識別子 | ||||||||
| 収録物識別子タイプ | PISSN | |||||||
| 収録物識別子 | 1341-710X | |||||||
| 収録物識別子 | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA11159468 | |||||||
| 書誌情報 |
en : JIRCAS Working Report : Approach to Sustainable Forestry of Indigenous Tree Species in Northeast Thailand 巻 74, p. 33-40, 発行日 2012-03-30 |
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