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        송도의 적송집단 (赤松集團)

        임경빈(Kyong Bin Yim),김진수(Chin Su Kim) 한국산림과학회 1974 한국산림과학회지 Vol.24 No.1

        Pine forests existing in Hong-do island were examined as regarding such characteristics, tree form, needle length, branch diameter, bark colors, ratio of summer wood to springwood, location and number of resin canal and other measurements. Hong-do island, located the furthest west part of Korea, suports only Pinus densiflora but very few Pinus thunbergii, in fact the present authors could not find any black pine individuals at all through investigation. Checking 14 individual trees of red pine, more than age of 20, of the genetic contamination by black pine, in a certain degree, exist. Here, a very dense foliage type and a very sparse foliage type tree of red pine growing nearby was examined and the unique fact was that each of those type has only one (average number 1.3) accessory resin canal, while other trees have three as minimum or more. The present authors thought this island had not been covered by any Pinus thunbergii but by Pinus densiflora. It was thought that Pinus thunbergii stands grown along the sea-coast of Korean Peninsula are pollen donors to this island.

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        임목성장량의 조기추정에 관한 연구

        임경빈(Kyong Bin Yim),이여하(Yo Ha Lee),권기원(Ki Won Kwon),김진수(Zin Suh Kim) 한국산림과학회 1976 한국산림과학회지 Vol.30 No.1

        The workers involved in breeaing the growth of forest trees as well as in the efficiency of breding work wish to find out the evidence that juvenile-mature correlations are high ant that therefore early tests can be profitably employed in relation work. Juvenile-mature correlation denotes in general sense the interdependence between qualitative or quantitative data collected at different intervals during the life cycle. The correlation and also be obtained through the stem analysis if there is th possibility of cutting sample trees needed amount. In the present study, the juvenile-mature correlation coefficients are calculated from the stem analysis data. The every possible values of correlation coefficient between the 5-year age groups as to diameter, height, and volume growth of Pinus koraiensis S. et Z.amd Larix leptolepis Gord. grown in the middle district of Korea were calculated. All the sample trees were cut from the man made plantation. The correlation coefficients are presented in tables and figures. In Pinus koraiensis S. et Z.m the values of correlation coefficient between the successive age groups of heights growth are lower in general than those values pertaining to diameter growth. This tendencies are indifferent to site quality. In Larix leptolepis Gord., the values were lower thant these of Pinus koraiensis S.etZ. In any species and characteristics studied, the implications that at least 15 years growth character are related to 35 or 40 years size with reliability could be deduced. Through the relative ranking studies of diameter, height and volume growth of Larix leptolepis Gord., the large varieties among individual trees are appeared during 5-year to 35 year old

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