| Project/Area Number |
13575023
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
林学
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| Research Institution | Utsunomiya University |
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Principal Investigator |
OHKUBO Tatsuhiro Utsunomiya Univ., Dept. of Forest Science, Assoc. Prof., 農学部, 助教授 (10176844)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Akira Osaka City Univ., Dept. of Biology, Lecturer, 理学部, 講師 (40274344)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2001: ¥3,600,000 (Direct Cost: ¥3,600,000)
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| Keywords | Sarawak / Aerial photograph / Digital Elevation Model / Tropical Rain Forest / Canopy / Large scale plot / DEM |
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| Research Abstract |
Purpose and Justification : 1) To get the digital elevation data for forest canopy surface in a mesh of 5m intervals for 52 ha LTER plot analyzed by using aerial photographs in a 52ha LTER plot, Mixed Dipterocarp forests, Lambir Hills National Park, Sarawak, Malaysia. 2) To construct a canopy height profile and analyze the dynamic phases. This will clarify more precise, local and regional estimates of dynamic phases based on forest canopy surface and can estimate stand biomass and carbon sequestration.
Methods : Aerial photography, Signalization, Ground control Point Survey and Acquisition of 2.5m or 5m Grid Digital Elevations on canopy surface were conducted using aerophotographs above 52ha plot (500mxl040m).
Results and Discussion : Canopy surface DEM data (5mx5m grid) in the 52ha plot showed the roughness of the canopy and coincidence with topographic characteristics. Large-scale gaps were located on the steep slopes on the dip slope, on the other hands, the smaller gaps distributed on the back slope, respectively. A new method for analyzing gap light condition using openness of canopy cover suggested species diversity in the canopy gap was evaluated not only by canopy gap area, but also by canopy openness.
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