| Project/Area Number |
11680525
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | GUNMA UNIVERSITY |
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Principal Investigator |
NOMURA Satoshi GUNMA UNIVERSITY, FACULTY OF SOCIAL AND INFORMATION STUDIES PROFESSOR., 社会情報学部, 教授 (20008155)
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| Co-Investigator(Kenkyū-buntansha) |
ABE Junichi UNIVERSITY OF TSUKUBA, INSTITUTE OF AGRICULTURE, ASSISTANT PROFESSOR., 農林学系, 助手 (40292510)
TOKUMASU Seiji UNIVERSITY OF TSUKUBA, INSTITUTE OF BIOLOGICAL SCIENCES, VICE PROFESSOR., 生物科学系, 助教授 (80092526)
ISHIKAWA Shinichi GUNMA UNIVERSITY, FACULTY OF SOCIAL AND INFORMATION STUDIES, LECTURER., 社会情報学部, 講師 (80251015)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1999: ¥2,800,000 (Direct Cost: ¥2,800,000)
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| Keywords | AIR TEMPERATURE / ALPINE PLANTS / FUNGAL DISTRIBUTION / MICORRHIZAE / STRUCTURED SOIL / VOLCANIC CRATER / VOLCANIC SOIL STRUCTURE / VOLCANO / 火山地形 / 火山植生 / 協調的保全 |
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| Research Abstract |
ALPINE PLANTS DISTRIBUTION PATTERNS AT MT.KUSATSU MOTOSHIRANE WERE DESCRIBED AND SOME RELATED ENVIRONMENTAL FACTORS WERE INVESTIGATED.AT THE KARAGAMA VOLCANIC CRATER, HIGHER AREA OF THE CRATER WALL IS MAINLY COVERED WITH ABIES VEITCHIIAND BETULA ERMANII, AND LOWER AREA IS COVERED WITH PINUS PUMILA AND VACCINIUM ULIGINOSUM.THIS DISTRIBUTION PATTERN IS CONTRARY TO THE GENERAL PATTERN OF THESE SPECIES.CONTINUOUS AIR TEMPERATURE MEASUREMENT REVEALED THAT THE HIGHER AREA WAS WARMER THAN THE LOWER AREA DURING THE WINTER SEASON.THE SOIL PROFILE AT THE BOTTOM OF THE KARAGAMA VOLCANIC CRATER SUGGESTS THAT THIS AREA IS UNDER WET AND COLD ENVIRONMENT.THERE ARE MANY NATURALLY-DESTRUCTED SITES AROUND THE CRATER AND SANDS AND GRAVELS ARE CONTINUOUSLY SUPPLIED TO THE BOTTOM OF THE CRATER.THESE ENVIRONMENTAL CONDITIONS MAY CAUSE THE UNIQUE PATTERN OF THE VEGETATION IN THE CRATER.
THERE ARE SOME SITES WITH STRUCTURED SOILS IN AND AROUND THE KARAGAMA CRATER AND ENORMOUS NUMBER OF AN ALPINE PLANT, DICENTRA PEREGRINA, ARE PLANTED THERE.THE GEOGRAPHICAL SURVEY REVEALED THAT THIS PLANT WAS REMOVED FROM THE SAND BELT OF THE STRUCTURED SOILS BY SOIL MOVEMENT CAUSED BY THE CREATION OF FROST COLUMNS DURING THE OLD SEASON.
INVESTIGATION OF RHIZOSPHERIC FUNGI SHOWED THAT MOST OF THE ALPINE PLANT SPECIES GROWING AT THE TOP OF THE MT.KUSATSU MOTOSHIRANE AND MT.KUSATSU SIRANE HAVE MICORRHIZAL SYMBIOSIS.THIS SUGGEST THAT THE MICORRHIZAL FUNGI PLAY AN IMPORTANT ROLE FOR ALPINE PLANT SURVIVAL IN THE VOLCANIC REGION.
FUNGAL DISTRIBUTION PATTERNS IN LITTERS OF PINUS PUMILA AND ABIES VEITCHII, ANIMAL DUNGS AND VOLCANIC ACID LAKES REVEALED THAT THE DECOMPOSITION SYSTEM IN THIS VOLCANIC REGION IS REGULATED BY THE COLD CLIMATE, BUT MAYBE GOOD ENOUGH FOR MATTER CYCLING WITHIN THIS ECOSYSTEM.
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