岐阜市近郊における植生構造と帰化植物の生育状況
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概要
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We studied the species composition of vegetation and the growth of naturalized plant species in the raising stock center of Gifu city. The coverage of all species occurred were measured in 113 quadrats (1m×1m) set up in various growth environments. The number of quadrats were 15 for the cattle shed area, 5 for the arable land, 6 for the campground, 11 for the arboretum, 34 for the walkway constructed 3 years before, 23 for the walkway constructed several years ago, 6 for the artificial forest, 7 for the secondary forest, and 6 for the bamboo stand. These growth environments were considered to be different in the intensity of artificial disturbance such as trampling, weeding, cutting. It seemed that the intensity of artificial disturbance might be severe in the cattle shed, the arable land, the campground and the walkway, but moderate or small in the arboretum, the artificial forest, the bamboo stand and in the secondary forest. We recorded 152 plant species including 64 woody species. The cattle shed area, the arable land, the campground, the bamboo stand and the artificial forest seemed to have lower diversity and smaller number of woody species than the other 4 growth environments. According to the relative dominance in each growth environments, the major plant species could be distinguished into 6 groups (A1, A2, A3, R, N1, N2). A1, A2 and A3 had peak dominance in the cattle shed, in the arable land and in the campground, respectively. R, N1 and N2 had peak dominance in the walkway, in the arboretum and in the secondary stand, respectively. But the latter three groups tended to occur uniformly in the growth environments with the exception of the cattle shed, the arable land and the campground. We could identified 14 naturalized plant species grown in the raising stock center. The ratio of the number of naturalized plant species to the total number of plant species were lower in the arboretum, the artificial forest and the secondary forests. The average number of naturalized plant species per quadrate were also lower in these growth environments.
- 岐阜大学の論文
- 2001-09-25
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