- 著者
- Atsushi Yoshimoto Patrick Asante Masashi Konoshima
- 出版者
- FORMATH Research Society
- 雑誌
- FORMATH (ISSN:21885729)
- 巻号頁・発行日
- pp.16.003, (Released:2017-04-07)
- 参考文献数
- 15
- 被引用文献数
- 2 2
We propose an alternative approach for optimal forest stand aggregation for implementing harvest scheduling, which allows for multiple harvests using a compact formulated integer programming that seeks an optimal aggregated pattern among candidates for forest management units over the planning horizon. We deal with aggregation of small forest stands by introducing the concept of a "hyper unit" as a possible aggregated management unit, which is predefined with the use of adjacency relationship among the set of forest stands. Our proposed approach is based on an optimization framework of a traditional spatially constrained harvest scheduling problem which is used to choose the best set of treatments for the aggregated management units, as well as the original un-aggregated forest stands, while allowing for multiple harvests. We also apply adjacency constraints to create aggregated management units, which are separated from other units, as well as un-aggregated forest stands such that, no adjacent units are harvested in the same period.
- 著者
- Kenan Ok Bob Izlar Jacek Siry
- 出版者
- FORMATH Research Society
- 雑誌
- FORMATH (ISSN:21885729)
- 巻号頁・発行日
- vol.14, pp.11-19, 2014 (Released:2015-03-23)
- 参考文献数
- 22
- 被引用文献数
- 1 1
Countries in the world might be classified for discussion purposes at international meetings using definitions such as small island developing states, low forest cover countries, rich forest cover countries, forest product exporters, importers, donors, etc. that use their forestry characteristics. While some countries generate income from forests, some have to compensate deficit on revenue to sustain their forests. Nations have rights and responsibilities to cooperate in sustainable forest management at the country level and global scale. Some mechanisms, such as the Global Environmental Facility (GEF) and Reduced Emissions from Deforestation and Forest Degradation (REDD), were generated by international institutions to support various countries' needs to solve local problems related to global concerns including sustainable forest management. The suitability of these mechanisms is under discussion at international meetings. Green economy and green accounting terms have also been discussed using mechanisms for payment for ecosystem services (PES). The aim of this study is to develop a method to compute the financial contribution levels for cooperation among countries with different characteristics regarding forestry activities and common forest values. Using general equilibrium models, a balance equation consisting of variables dealing with country rights and responsibilities for sustainable forests is offered as a method to hypothetically classify nations. This equation was tested using random hypothetical data. The results indicate the equation may be used to understand the relative classification of the countries.