A preliminary study on the effects of pyroclastic fall deposit on the forest ecosystem in southwestern hokkaido, japan
スポンサーリンク
概要
- 論文の詳細を見る
In southwestern Hokkaido, volcanic activities were high during historical times. For examination of their effects on forest ecosystem, we conducted preliminary survey using a dendroecological technique. Tree-ring samples were collected mainly in the southern part of the Ishikari Lowland where some layers of pyroclastic fall were found. The number of tree-rings was counted and tree-ring widths were measured. As a result, we could distinguish from the 1739 tree ring measurements the effect of eruption with its subsequent Ta-a volcanic deposition. This proves that the effect on tree growth changed in proportion to distance from the origin of the pyroclastic fall.
- 東京都立大学の論文
著者
-
TAKAOKA Sadao
Department of Physics,Faculty of Science,Osaka University
-
Takaoka Sadao
Department Of Geography Tokyo Metropolitan University
-
Oka Shuichi
Department of Geography,Tokyo Metropolitan University
-
Oka Shuichi
Department Of Geography Tokyo Metropolitan University
-
Oka Shuichi/takaoka
Department Of Geography Tokyo Metropolitan University/department Of Geography Tokyo Metropolitan Uni
関連論文
- An Indication of Quantum Hall Effect in PbTe-Pb_Sn_xTe Superlattice
- Investigation of Hall Resistivity in Antidot Lattices with respect to Commensurability Oscillations
- On the Mechanism of Commensurability Oscillations in Anisotropic Antidot Lattices
- Current-Direction-Dependent Commensurate Oscillations in GaAs/AlGaAs Antidot Superlattice
- Anderson Localization and Universal Conductance Fluctuations with Spin-Orbit Interactions in δ-Doped GaAs Films and Wires
- Phase Coherence Length in Planar Doped Thin GaAs Wires Fabricated by Ion Beam Etching : Microfabrication and Physics
- Phase Coherence Length in Planar Doped Thin GaAs Wires Fabricated by Ion Beam Etching
- Landform effects on fire behavior and post-fire regeneration in the mixed forests of northern Japan
- Electron-Beam-Induced Oxidation for Single-Electron Devices
- Investigation of Photoresponse in Photoconducting Semiconductor-Superconductor Microstructure
- Transport Properties and Fabrication of Coupled Electron Waveguides
- Evaluation of Edge Channel Width by Frequency Dependence of Capacitance Minima in Quantum Hall Regime
- Magnetic Electron Focusing Effect in GaAs/AlGaAs Heterostructure with Gate-Controlled Byway Channel
- Magnetotransport in Hexagonal and Rectangular Antidot Lattices
- Investigation of In Situ Process for GaAs/AlGaAs Buried Quantum Wires
- Fabrication and Magnetotransport of One-Dimensional Lateral Surface Superlattice Fabricated by Low-Energy Ion Irradiation
- Estimation of Damage Induced by Focused Ga Ion Beam Irradiation
- Transport Properties of Coupled Electron Waveguides Buried irn Heterostructure
- Single Particle Relaxation Times from Shubnikov-de Haas Oscillations in Antidot Structures
- The effect of missing rings on stand-age estimation of even-aged forests in northern Hokkaido, Japan
- Observation of Local Modes in Pb_Sn_xTe Doped with Group III Elements (In and Ga)
- A preliminary study on the effects of pyroclastic fall deposit on the forest ecosystem in southwestern hokkaido, japan
- Investigation of Transport Properies in Pb_Sn_xTe Doped with Indium
- A PRELIMINARY REPORT ON PHENOLOGICAL MONITORING USING EXPERIMENTAL CHAMBERS IN MT. KISOKOMAGATAKE, CENTRAL JAPAN (18th Symposium on Polar Biology)
- Band Edge Structure Transformation Due to Ferroelectric Transition in Pb_Ge_xTe Alloy Semiconductors
- Stability of Subalpine Forest-Meadow Boundary Inferred from Size and Age Structure of Abies mariesii Thickets on a Japanese Snowy Mountain
- Studies of Far-Infrared Properties of Thin Bismuth Films on BaF_2 Substrate
- Ballistic Electron Transmission in GaAs-AlGaAs Crossed Wire Junctions
- Transport Properties in Hexagonal Arrays of Antidots with Different Carrier Densities
- Ballistic Electron Transport on Periodic and Quasi-Periodic Triangular Lattices of Scatterers : Micro/nanofabrication and Devices
- Ballistic Electron Transport on Periodic and Quasi-Periodic Triangular Lattices of Scatterers
- Electron Focusing in a Widely Tapered Cross Junction