高山植物の生態および保護に関する調査研究-3-木曽駒ケ岳千畳敷カ-ル周辺の植生に対する人間の影響について

概要

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In the Senzyojiki-cirque of Mt. Kisokoma, very suitable alpine vegetation is developing and in the Gokuraku-daira ridge of the mountain, many valuable species from the vew point of botanical science are growing. Recently, many people visit there, because of the ropeway opend in 1967. When visitors increased, the vegetation would be disturbed and more care about preservation of alpine plants would be necessary. In order to make clear the influence of human activity on the alpine vegetation of Mt. Kisokoma, permanent quadrats have been set sice 1968. In the quadrat set on the conservative zone of the Senjyojiki-cirque, most species increased in density, and decreased bare land with progressing the year from 1969 to 1980. In the quadrats set on the ridge of the Gokuraku-daira, density of most species decreased in the quadrat set near pathway, while density of them did not change in the quadrats set far from the pathway, with progressing the year from 1968 to 1980. From the records of photographs of upper part of the Senjyojiki-cirque, taken from the same point from 1965 that is before the ropeway opening to 1980 thirteen years after the ropeway opening, it is clear that vegetation of that situation was destroyed some years after the ropeway opening. Based on the results observed here, we discussed on the influence of human activity on the vegetation of alpine zone.
信州大学農学部の論文