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A study on the sustainable management of natural teak forests in Myanmar
https://doi.org/10.15083/00004881
https://doi.org/10.15083/000048819291c55f-ba9a-455a-947e-c9420fa38bf0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
H24_tin.pdf (3.3 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-05-13 | |||||
| タイトル | ||||||
| タイトル | A study on the sustainable management of natural teak forests in Myanmar | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_46ec | |||||
| タイプ | thesis | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/00004881 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | ミャンマーにおけるチーク天然林の持続的経営に関する研究 | |||||
| 著者 |
Tin, Tin Myint
× Tin, Tin Myint |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 10606 | |||||
| 姓名 | ティン, ティン ミィント | |||||
| 著者所属 | ||||||
| 著者所属 | 東京大学大学院農学系研究科森林科学専攻 | |||||
| Abstract | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Myanmar has been experiencing natural teak forest degradation, consequent affect of over-exploitation of teak above the prescribed cut limit, and challenging of restoring its degraded forests. The un-sustainable way of teak production from the natural forests of Myanmar is the main driving factor to point out the currently applied Brandis yield model for Annual Allowable Cut (AAC) of teak and to propose an alternative model for the yield regulation of teak. This study was composed of five chapters: introduction, study site and data set, preliminary analysis of teak conditions in natural forests, developing alternative approach for yield regulation, discussion and conclusion. Under the system of Myanma Selection System (MSS), it was believed that the future consistent supply of teak would be ensured by following AAC with the prescribed girth limit for exploitable teak trees and felling cycle of thirty-year. Through the preliminary analysis on existing yield model, this study addressed that no forest stands had been harvested in accordance with AAC. Decreasing girth limit and shortening felling cycles were observed in the selected research site. In fact, this yield regulation model was developed over centuries for the sustainable teak productivity of the virgin natural forests which were almost untouched by disturbances. The author also examined disturbance finding in each girth class of teak stock. The loss of younger stems of teak between two felling cycles was suggested mainly due to illegal logging by local people staying near the forest sites. To resolve the drawbacks of existing yield model, the new model was developed by considering the utility of maturities as an index in the sustainable management of natural teak in stand levels. The concept of the maturity is to check whether the trees in each girth class moved to next higher class over years and if moved, the maturity was considered increase. As long as we found the maturity increase across the girth classes, that stand could be considered as stable and chosen for harvest. While Brandis’ method was applicable only for the forests with the excess amount of mature trees, the new one would be feasible to apply in the current situation of natural forests which has been facing the problems of degradation and over-exploitation of timber in Myanmar. | |||||
| 書誌情報 | 発行日 2012-04-13 | |||||
| 学位名 | ||||||
| 学位名 | 博士(農学) | |||||
| 学位 | ||||||
| 値 | doctoral | |||||
| 学位分野 | ||||||
| Agriculture(農学) | ||||||
| 学位授与機関 | ||||||
| 学位授与機関名 | University of Tokyo (東京大学) | |||||
| 研究科・専攻 | ||||||
| Department of Forest Science, Graduate School of Agricultural and Life Sciences(農学生命科学研究科森林科学専攻) | ||||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2012-04-13 | |||||
| 学位記番号 | ||||||
| 博農第3846号 | ||||||
