高山植物の生態および保護に関する調査研究-2-木曽駒ケ岳千畳敷カール周辺における定置わく内植生の経年変化

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概要

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• In order to examine the influence of disturbance by human upon alpine vegetation of Mt. Kisokorna, permanent quadrats have been set around Senjyojiki-circue since 1968. Four quadrats were set on the points shown in Figure 1. Size of the quadrats used were 1 × 1 m with 100 units of 10 × 10 cm in station No. 1, 2 and 3 and 0.3 × 30m with 30 units of 0.3 × 1 m in station No. 4. The results obtained are as follows ; remarkable decrease in numbers were recognized in some alpine plants, e. g. Solidago virgaurea subsp. leiocarpa, Artemisia sinanensis, Peucedanum multivittatum and Rumex arifolius in the No. 1 quadrat and Leontopodium shinanense and Ariemisia glomerata in the No. 4, which were set on near pathway (Figure 2 and Table 4). And also, increased tendency of the numbrer of bare land unit was recognized with progressing the year (Table 1). On some species such as Potentilla Matsumurae, Minuartia hondoensis and grasses, which decreased its number in the quadrats near pathway was progressed slightly compared with other species. It may be suggested that these species have tolerance to bared land. In No. 2 and No. 3 quadrats set on the conservative zone, on the contrary, remarkable vegetational change was not recognized, and numbers of bare land unit decreased with progressing the year (Figure 3, 4 and Table 2, 3). From the result obtained above, it is clear that the alpine vegetation is influenced considerably by human disturbance.

• 信州大学農学部の論文

著者

• 氏原 暉男

  信州大学農学部応用生命科学科

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• 高山植物の生態および保護に関する調査研究-2-木曽駒ケ岳千畳敷カール周辺における定置わく内植生の経年変化

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