Ecological studies on the timberline of Mt. Fuji
Tóm tắt
An ecological study of dry matter production was made in a dwarf forest dominated byAlnus maximowiczii at the timberline of Mt. Fuji. Annual gross production was estimated by two methods, namely the summation method using stem analysis and total photosynthesis calculated from leaf area and photosynthetic rate per leaf area. Seasonal changes in relative light intensity and in leaf area were measured in a quadrat. Photosynthesis and respiration rates of samples were measured in temperature-regulated assimilation chambers. The phytomass was 2,989 g d.w.m−2, and those of stems and branches, leaves, and roots were 1,672 g, 293 g, and 1,024 g respectively. The growing period of this plant was about four months and this plant expanded leaves quickly. The maximum gross photosynthetic rate was 21 mg CO2dm−2 h−1 on September 1. Annual net production estimated by examining the annual rings was 922 g d.w.m−2 year−1 and annual respiration was 735 g. Annual gross production estimated from photosynthetic rates was 1,747 g d.w.m−2 year−1. The sum of annual net production by stem analysis and respiration agree closely with gross production estimated from photosynthetic rate. Gross production of this dwarf forest is comparable to the beech forest of the upper cool temperate zone owing to the high photosynthetic rate ofAlnus maximowiczii.
Tài liệu tham khảo
Hayata, B. 1911. The Vegetation of Mt. Fuji. Maruzen, Tokyo.
— 1929. Succession in the vegetation of Mt. Fuji. Act. For. Fenn.34: 1–28.
Ikusima, I. 1967. Ecological studies on the productivity of aquatic plant communities III. Effect of depth on daily photosynthesis in submerged macrophytes. Bot. Mag. Tokyo80: 57–67.
Ito, E. 1964. Climate of Mt. Fuji. Bull. Fac. Agr., Shizuoka Univ.14: 177–187 (in Japanese).
Kimura, M. 1960. Primary production of the warm-temperature laurel forest in the southern part of Ôsumi Peninsula, Kyûshû, Japan. Misc. Rep. Res. Inst. Nat. Resour.52–53: 36–47.
— 1976. Methods of Estimating Primary Production of Terrestrial Plant Communities. Kyoritsu Shuppan, Tokyo (in Japanese).
—. 1968. Ecological and physiological studies on the vegetation of Mt. Shimagare VI. Growth and dry matter production of youngAbies stand. Bot. Mag. Tokyo81: 287–296.
Kira, T., H. Ogawa, K. Yoda andK. Ogino. 1964. Primary production by a tropical rain forest of southern Thailand. Bot. Mag. Tokyo77: 428–429.
—,H. Ogawa, K. Yoda andK. Ogino. 1967. Comparative ecological studies on three main types of forest vegetation in Thailand. IV. Dry matter production, with special reference to the Khao Chong rain forest. Nature and Life in SE Asia5: 149–174.
— andT. Shidei. 1967. Primary production and turnover of organic matter in different forest ecosystems of the Western Pacific. Jap. J. Ecol.17: 70–87.
Maruyama, K. 1971. Effect of altitude on dry matter production of primeval Japanese beech forest communities in Naeba Mountains. Mem. Fac. Agr., Niigata Univ.9:85–171.
Maruyama, K., S. Yamada and M. Nakazawa. 1968. A tentative calculation of gross production by natural forests of beech. Ecological studies on beech forest (17). Trans. 79th Meet., Jap. For. Soc. p. 286–288 (in Japanese).
Masuzawa, T. 1983. An ecological study of microclimate at timberline on Mt. Fuji: II. Air temperature, relative humidity and light condition. Rep. Fac. Sci., Shizuoka Univ.17: 91–99.
— 1985. Ecological studies on the timberline of Mt. Fuji I. Structure of plant community and soil development on the timberline. Bot. Mag. Tokyo98: 15–28.
Monsi, M. andT. Saeki. 1953. Über den Lichtfaktor in den Pflanzengesellschaften und seine Bedeutung für die Stoffproduktion. Jap. J. Bot.14: 22–52.
Nomoto, N. 1964. Primary productivity of beech forest in Japan. Jap. J. Bot.18: 385–421.
Pisek, A. andE. Winkler. 1958. Assimilationsvermögen und Respiration der Fichte (Picea excelsa Link) in Verschiedener Höhenlage und der Zirbe (Pinus cembra L.) an der Alpinen Waldgrenze. Planta51: 518–543.
Saeki, T. 1959. Variation of photosynthetic activity with aging of leaves and total photosynthesis in a plant community. Bot. Mag. Tokyo72: 404–408.
— 1960. Interrelationships between leaf amount, light distribution and total photosynthesis in a plant community. Bot. Mag. Tokyo72: 55–63.
—. 1958. On the seasonal change of photosynthetic activity of some deciduous and evergreen broadleaf trees. Bot. Mag. Tokyo71: 235–241.
Shizuoka District Meteorological Observatory. 1981. Kishô Geppô, Shizuoka (in Japanese).
Tadaki, Y. 1965. Studies on the production structure of forests (VII). The primary production of a young stand ofCastanopsis cuspidata. Jap. J. Ecol.15: 142–147.
— 1968. Studies on the production structure of forests (XIV). The third report on the primary production of a young stand ofCastanopsis cuspidata. J. Jap. For. Soc.50: 60–65.
—. 1970. Studies on the production structure of forest (XVI). Primary production ofAbies veitchii forests in the subalpine zone of Mt. Fuji. Bull. Gov. For. Exp. Sta.229: 1–22.
Tohyama, M. 1966. Subalpine needle-leaved forests of Mt. Fuji. Mem. Fac. Agr. Hokkaido Univ.6-1: 1–34 (in Japanese).
— 1968. The alpine vegetation of Mt. Fuji. J. Fac. Agr., Hokkaido Univ.55, 4: 459–467.
Tranquillini, W. 1979. Physiological Ecology of the Alpine Timberline. Springer-Verlag, Berlin.
Yamaya, K. 1972. Studies on leaf-decomposition of alder (Alnus inokumae) and movement of some ingredients originating from decomposed leaves. Bull. Gov. For. Exp. Sta.249: 1–16.