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Studies on seasonal changes of collembolan community in the plantations of korean white pine pinus koraiensis which is planted in different year


, : Studies on seasonal changes of collembolan community in the plantations of korean white pine pinus koraiensis which is planted in different year. Korean Journal of Applied Entomology 28(4): 201-209

A study has been carried out to examine the characteristics of the soil arthropodan communities in the plantations of Korean white pine, Pinus koraiensis. Periodical soil samples were taken from the forests during the period from July, 1986 to June, 1987, except in winter months. The arthropods were extracted by the means of Berlese funnel. The distribution of collembola showed to be aggregated and appeared to be different distribution pattern with the environmental conditions. The structures of the collembolan communities in the soil seemed to reflect the forest conditions; and the diversity of the component species and the fluctuation of the number of individuals showed greater stability with the older plantations than with the younger ones. With young plantation sites, the various indices of the community, however, were affected more by the physical conditions than those of plantations. A great increase in the number of individual occurred in August and the peak densities continued thereafter through October, and these might be related with the reproductive patterns of the component species as well as the temperature and the accumulation of organic materials.

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