水原樹木園地域內의 自然森林植生 調査結果

Abstract

Soil moisture contents and vegetation of the forest land planed to establish the Suweon Arboretum had been investigated to obtain some informations for establishing arboretum, and also for keeping the original vegetation composition data after the arboretum was established. The results obtained in this investigation could be summarized as follows: 1. In general, the coverage of Agrostis clavata var. nukabo was very high. The coverage of Ixeris dentata and Ixeris dentata var. albijlora were high except for very arid blocks. Coverages of Carex maximozericzii and Isachne globosa were high in wet blocks. The coverage of Zoysia japonica was high in very arid blocks and that of Carex lanceolata and Festuca ovina inlarid blocks were high. 2. Soil moisture content was distributed from 14.7% to 88.9%. Especially the' fact of the high moisture content (74.7, 77.5, 88.9%) in dry season implied that the ground water level of this area was high. The vegetation composition of this forest was varied, too. Therefore, it is considered that the stability of this forest was fragile.