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拠点大学交流ワークショップ「東南アジアにおける土地管理と生物多様性2005」
日時：2004年6月1日(水) 10:00～14:00
場所：北海道大学百年記念会館大会議室
Core-University-Program Workshop on “Land Management and Biodiversity in Southeast Asia, 2005”
10:00-14:00, Wednesday, 1 June 2005
Meeting Room, Centennial Hall, Hokkaido University
プログラムProgram
10:00-10:05 開会 Opening
10:05-10:20
1. Detection of land-cover change from 1996 to 2003 by LANDSAT images in Central Kalimantan, Indonesia
Hendrik SEGAH, Hiroshi TANI (Grad. Sch. of Agric., Hokkaido Univ.),
Suwido LIMIN (Fac. of Agric., Univ. of Palangka Raya)
10:20-10:35
2. テングザルの食性及び反芻行動
山田朋実
2. Feeding and rumination behavior of proboscis monkey
Tomomi YAMADA (Grad. Sch. of Environ. Earth Sci., Hokkaido Univ.)
10:35-10:50
3. 人為攪乱及び気候変動が熱帯泥炭林の微気象及び放射特性に与える影響
原田剛志, 平野高司, Hendrik SEGAH, Suwido LIMIN, Kitso KUSHIN, 大崎 満
3. Effects of disturbances and the El Nino drought on the micrometeorology and radiation characteristics of a tropical peat swamp forest
Tsuyoshi HARADA, Takashi HIRANO, Hendrik SEGAH (Hokkaido Univ.),
Suwido Limin, Kitso Kushin (UNPAR), Mitsuru OSAKI (Grad. Sch. of Agric., Hokkaido Univ.)
10:50-11:05
4. Three-dimensional coupled hydrodynamic-biogeochemical model experiment; Applied to Java Sea
Alan F. Koropitan, Motoyoshi IKEDA, Yasuhiro YAMANAKA, Koji SUZUKI
(Grad. Sch. of Eviron. Sci., Hokkaido Univ.)
11:05-11:15 休憩 Break
11:15-11:30
5. シロアリ社会にみる表現型多型の進化
越川滋行
5. Evolution of the polyphenic traits in termite societies
Shigeyuki KOSHIKAWA (Grad. Sch. of Environ. Earth Sci., Hokkaido Univ.)
11:30-11:45
6. Preliminary study results on dipterocarpous-associating microflora and a practical proposal to regenerate deforested lands
Irnayuli R. Sitepu, Mitsuru OSAKI, Satoshi TAHARA, Erdy Santoso, Yasuyuki HASHIDOKO
(Grad. Sch. of Agric., Hokkaido Univ.)
11:45-12:00
7. 熱帯泥炭林における持続的資源生産と利用について
玉井 裕
7. Sustainable resource production and utilization on tropical peat swamp forest
Yutaka TAMAI (Grad. Sch. of Agric., Hokkaido Univ.)
12:00-13:00 昼食 Lunch break
13:00-14:00
8. 今後の研究課題と取り組みについて：討議
鈴木仁, 井上京, 早坂洋史, 田中俊逸, 大崎満
8. Discussion: Issues and research plans related to the JSPS core university program
Hitoshi SUZUKI (Grad. Sch. of Environ. Earth Sci., Hokkaido Univ.)
Takashi INOUE (Grad. Sch. of Agric., Hokkaido Univ.)
Hiroshi HAYASAKA (Grad. Sch. of Engin., Hokkaido Univ.)
Shunitz TANAKA (Grad. Sch. of Environ. Earth Sci., Hokkaido Univ.)
Mitsuru OSAKI (Grad. Sch. of Agric., Hokkaido Univ.)
14:00 閉会Closing
Detection of land-cover change from 1996 to 2003 by LANDSAT images
in Central Kalimantan, Indonesia
Hendrik SEGAH1,*), Hiroshi TANI1) and Suwido LIMIN2)
1) Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589 Japan
2) Faculty of Agriculture, University of Palangka Raya, Palangka Raya 73112, Indonesia
ABSTRACT
Tropical peatlands in Indonesia are one of the largest near-surface reserves of terrestrial organic carbon, and hence their stability has important implications for climate change. The forest ecosystem is threatened constantly by both human impacts like forest fires, air pollution, clearing for agricultural uses, illegal logging and also natural phenomena like longest drought events (El-NINO in 1997 and 2002). The monitoring and control of this dynamically structured forest ecosystem give the best usage possibilities for the sustainable operation and protection of tropical peatland resources.
We employed Maximum Likelihood Classification method using the digital data of LANDSAT TM and ETM+ Path/Row 118/062 on three dates from 10 May 1996, 16 July 2000 and 14 January 2003 followed by Post Classification Comparison (PCC) within the study area of 540,000 ha located in Central Kalimantan, Indonesia. Eight land cover classes were selected for the analysis: urban/bare area, water body (rivers, lakes, etc.), dry grass, swamp grass, shrub, peat swamp forest, clouds and cloud shadows. The land-cover change class information can be detected by Post Classification Comparison method and we could find which class change to another. This report overviews the procedures used for change detection and presents some results of the change detection analysis.
Three-dimensional coupled hydrodynamic-biogeochemical model experiment; applied to Java Sea
Alan F. Koropitan, Motoyoshi Ikeda, Yasuhiro Yamanaka, Koji Suzuki
Division of Environmental Science Development
Graduate School of Environmental Science
Hokkaido University
ABSTRACT
The major objective of the planned research activity is to study the interaction of physical-biogeochemical processes in Java Sea by using a coupled hydrodynamic- biogeochemical model. The specific objectives study are to analyze (1) the role of the nutrients from different sources in the Java Sea, (2) the influence of tidal mixing to material transport in the coastal zone, (3) the influence of monsoonal flow pattern to the material exchanges between Java Sea and the adjacent sea, and (4) the biogeochemical fluxes (rivers, open sea and atmosphere). The hydrodynamic model is Princeton Ocean Model (POM), a primitive equation model which solves the equations for the ocean velocity component, potential temperature, and salinity. The biogeochemical model is based on advection-diffusion model, where the source/sink terms are representation of Carbon-Nitrogen-Phosphor (C,N,P) interaction in Java Sea region. Especially for linkage to Carbon cycle, several carbon models will be investigated in order to find a better estimate in Java Sea region.
As a part of the main research, we have calculated tidal current and mixing in the Java sea for understanding physical processes and their impact to material (biogeochemical compartments) transport. Diurnal component of K1 is a main tidal constituent in Java sea, and its tidal wave propagation from Flores sea has made wave superposition caused by solid boundary in the western part. Furthermore, related to the Merian’s equation, Java sea has a natural period near the diurnal period of K1 which responsible to resonance in the central part of Java Sea region. The existence of tidal mixing is showed very high in the central part of Java Sea and strong relationship with tidal resonance. Tidal mixing has an important role in vertical material transport.
In order to validate the physical model, data collection will be done in future. Also, the tidal current will be combined with wind-driven current, and residual current will be calculated related to material transport. Finally, the biogeochemical model and its application (include riverine input, water discharge and nutrient, based on field observation) will be developed and running in the future.
Preliminary study results on dipterocarpous-associating microflora and
a practical proposal to regenerate deforested lands
Irnayuli R. SITEPU1, Mitsuru OSAKI1, Satoshi TAHARA1, Erdy SANTOSO2,
Yasuyuki HASHIDOKO1
1. Graduate School of Agriculture, Hokkaido University, Japan
2. Forest and Development Agency, Ministry of Forestry, Indonesia
ABSTRACT
Classical problems in rehabilitation of deforested areas include incapability of transplanted seedlings to survive well in such loaded lands, characterized generally by low pH, nutrient imbalance and/or toxicity. Another factual is that forests are invulnerable against unsustainable harvest activities that include massive illegal exploitation and fire, raising the importance of improving human’s awareness of the forest functions. Therefore, rehabilitation activities should be directed towards both aspects. Our preliminary studies indicate that current forests still maintain diverse functional microflora able to promote initial seedling growth in loaded areas. Our findings using Shorea selanica, Shorea leprosula and Shorea balangeran revealed that some bacteria improved initial seedlings growth. These microflora may assist plant growth by one or more functions such as nitrogen fixation, mineral solubilization, phytohormone production, and/or disease prevention/suppression. This beneficial assistance can only be derived exclusively from microfloral association. One important aspect of this approach is an accurate inoculation method to assist the bacteria to functions as growth promoters. In this workshop, we wish to elaborate our progressive findings on tree-microfloral associations and the possible mechanisms that cause the growth promotion. A proposal on how this less-costly forest input management may be practically achieved will also be discussed including the importance of human aspect as the key element of the system.
Keywords: Low input forest management, Functional microflora, Local people