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조선희 ( Seon Hee Cho ),김대우 ( Dae Woo Kim ),강상호 ( Sang Ho Kang ),정여홍 ( Yeo Hong Jeong ),이성재 ( Sung Jae Lee ),김준선 ( Joon Sun Kim ) 한국산림과학회 2013 한국산림과학회지 Vol.102 No.3
The present study investigated the biological agents and environmental conditions of the habitats of the Kirengeshoma koreana, a class 2 endangered species class according to the South Korean Ministry of Environment (MOE), elucidated the structural characteristics of the forest stands in the habitats with the importance value and the diversity index, conducted comparative analysis of the factors, and explored their relationship with environmental factors. According to the results of direction analysis of natural habitats of the Kirengeshoma koreana, the direction was distributed to the north or the northeast, and the slope amounted to 15-40o, thus demonstrating that the slope has little effect. In addition, the results showed that the distribution of Kirengeshoma koreana populations dramatically increased starting in areas at least 600 m above the sea level and that the relative light intensity was 3.79% on an average. Most populations were native to gorges and crevices between rocks so that they mainly tended to inhabit areas that could see soil loss in times of precipitation. In addition, a considerable number of the populations were close to hiking trails as well, thus leading to concerns about their artificial destruction. The soil of layer a in the main growth space of the Kirengeshoma koreana was analyzed and turned out to be strongly acidic,measuring pH 4.45-4.89 (average: 4.68). All investigation sections were typical natural broad-leaved tree areas, and,judging from the fact that the Kirengeshoma koreana was most likely to appear in colonies of the Mongolian oak tree (Quercus mongolica Fisch. ex Ledeb.), the Mongolian oak tree seems to be the species of tree that has the greatest effect on the inhabitation of the Kirengeshoma koreana.
한국산 4개 지역형 소나무천연림의 (林) 물질 현존량 추정식에 관한 연구
박인협(In Hyeop Park),김준선(Joon Seon Kim) 한국산림과학회 1989 한국산림과학회지 Vol.78 No.3
Pinass densiflora natural forests of four local forms in Korea were studies to investigate effective biomass estimation method. Dimension analysis was used and three allometric regression models, such as logWt=A+BlogD, logWt=A+B1ogD²H and 1ogWt=A+ BlogD+ClogH were applied to estimate biomass, The most accurate estimation was made by the regression model of logWt=A+BlogD+ClogH where Wt is dry weight, D is diameter at breast height, and H is tree height. However, dry weights of cones and dead branches were remotely related to tree size factor, such as D and H. In the interest of practical use. generalized allometric regressions for all samples trees of four stands were computed and analysis of covariance was used to compare the allometric regressions among the four stands. Based on the test criteria applied in this study, significant differences were found in terms of error variance and regression intercept, not in terms of regression slope. These trends suggest a generalized biomass regression is not valid for accurate estimation over a range of four local form stands.
김갑덕,김태욱,이경재,김준선 ( Kap Duk Kim,Tae Wook Kim,Kyong Jae Lee,Joon Seon Kim ) 한국산림과학회 1985 한국산림과학회지 Vol.68 No.1
To study the comparison of the aboveground biomass of Robinia pseudoacacia L. of 8-, 13- and 20-year-old plantations, the experimental plot of 100㎡ in size located in Youngin-gun were selected. Seven sample trees at different stand ages selected taking account of DBH distribution were felled and the diagram of oven-dry weight distribution of stem, branch and leaf for each 1m segment was constructed. The dry weight of each part of plots was estimated by the method of basal area ratio. If the estimations are extended to a hectare area stand, it contains 36.72, 69.28 and 118.67 tons of the aboveground standing crops in 8-, 13- and 20- year-old stand respectively. The net production was estimated to be as much as 12.56, 13.23 and 16.78 tons per hectare per year and the net assimilation ratio 3.66, 4.13 and 2.50 ㎏/㎏/yr in 8-, 13- and 20-year-old stand respectively. And the efficiency of leaves to produce stem was 1.69, 2.10 and 0.96 ㎏/㎏/yr in same order.