백운산의 삼림식생과 토양환경 = Forest Vegetation and Soil Environment on Mt. Paekun

다국어 초록 (Multilingual Abstract)

The relationship between floristic composition and soil environmental conditions was investigated in the forest vegetation of Mt. Paekun. The forest vegetation unit of Mt. Paekun was divided into six plant communities by Zu¨rich-Montpellier method, such as Quercus mongolica community(Typical subcommunity, Rhododendron schlippenbachii subcommunity), Q. variabilis community, Fraxinus rhynchophylla community, Pinus densiflora community, Larix leptolepis community and Pinus koraiensis community. Q. mongolica community group was distributed at the altitude over 500 meter, Q. variabilis and P. densiflora communities appeared on the southwestern slope at the altitudes of 600∼700m and 290∼700m. However, L. leptolepis and P. koraiensis plantation were distributed at lower altitude, on hillside or around homestead. The DBH class distribution of dominant species in each community showed that Q. mongolica had 10.9 individuals/a at 6∼10㎝ class, Q. variabilis 2.5 individuals/a at 11∼15㎝ class, P. densiflora 1.8 individuals/a at 26∼30㎝ class, F. rhynchophylla 3.3 individuals/a at 2∼5㎝ class, and L. leptolepis 5.9 individuals/a at 11∼15㎝ class. Q. mongolica and Q. variabilis communities showed a stable bell-shaped pattern of distribution. The contents of organic matters and soil water, and cation exchange capacity of the soil increased, and the pH decreased as the altitude gets higher increased altitude at the each communities. The contents of the soil water and organic matters of the forest soil collected in Q. mongolica community were in the 17.81% to 51.20% and 5.51% to 14.90%, respectively. These tendency is similar to the contents of N, P and K, but those of Ca, Mg, and CEC was lower than in other communities. Cation exchange capacity was suspected to be correlated to the pH. The hypothetical successional sere of the forest vegetation of Mt. Paekun is as follows: Pinus densiflora community → Q. variabilis community → Q. mongolica community.