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백강균을 처리한 소나무림의 낙엽과 토양에 서식하는 무척주동물 군집에 대한 다변량분석
이범영(Buom Young Lee),신상철(Sang Chul Shin),박영석(Young Seuk Park),권태성(Tae Sung Kwon) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.5
We tested if the treatment of Beauveria bassiana would influence invertebrate communities in litter and soils by multivariate analysis. The PCA (principal components analysis) was used for the analysis. Using the distances between communities in the ordination space, we carried out statistical tests whether any factors would influence structures of the communities. We did not found any significant effects of the Beauveria treatment on invertebrate communities in both litter and soils.
김철수,정영진,이범영,박영석,전태수 한국임학회 2000 한국산림과학회지 Vol.89 No.2
D.B.H., height, crown length, crown width, crown form, crown area, and crown volume of dead and live trees were measured and the discriminant analysis was conducted to assess individual tree risk-rating in the pine forest seriously infested by the pine needle gall midge. Thecodiplosis japonensis. Crown length, crown form, crown area, and crown volume of live tree were significantly higher than those of dead tree, while D.B.H. and tree height were not different significantly. These results represent that the trees with higher and wider crown and larger crown volume have relatively higher probability to survive from the infestation by the pine needle gall midge. Variables selected in the functions of discriminant analysis were crown area, ratio of crown length, crown form, ratio of crown volume to crown area, and ratio of crown width.