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朴勝太 全北大學校 生物學硏究所 1983 生物學硏究年報 Vol.4 No.-
The epiphytic lichen communities analysed in terms of cluster analysis on forty two stands and eight environmental variables in Mt. Duckyoo. Ordination of stand and species by principal component analysis (PCA) and sum of square algorithm (SSA) gave similar results. Species cluster showed three groups (Ⅰ, Ⅱ, Ⅲ) and stand cluster revealed three groups (A, B, C). Interaction of stand and species cluster was interpreted by analysis of concentration technique. The results indicated a significant cluster structure at the level of different environmental variable.
朴勝太 全北大學校 生物學硏究所 1981 生物學硏究年報 Vol.2 No.-
The purpose of the study was to investigate the natural association of lichen species by interrelated characters. The method employed was single linkage cluster analysis(SLCA), which is one of the SAHN clustering methods. The date were based on seven characters, which are morphological, anatomical and physiological, and the characters were taken from the foliose lichen thallus of 15 species collected on the Mt. Chilli. Correlation coefficients were computed for all of the paired characters and the resulting matrices were analysed by principal component analysis (PCA). The eigenvalue of the first component was 3.126 of all the variables, and the second one 3.096 affecting little more than 40% of them. The threshold values calculated by Eucidean distance revealed the minimum spanning tree, a cluster of which shoed Parmelia exsecta-Parmelia koyaensis and another one of which was Hypogymnia physodes-Dirinaria applanata.
이차원 스펙트럼법을 이용한 굴거리나무 개체군의 유형분석
박승태 全北大學校 科學敎育硏究所 1989 과학과 과학교육 논문지 Vol.14 No.-
Two-dimensional spectral analysis is a general interrogative technique for describing all possible scale of pattern and detecting directional components in the spatial data. Spectral analysis is espdecially made using the autocorrelation-function, the periodogram, the R-spectrum and θ―spectrum. The periodogram represents spatial pattern of vegetation data so that it is possible to transform spatial spectrum. This study was carrired out spectral analysis to quantify the description of spatial pattern of Daphniphyllum population in the Naejang National Park. The results indicate strong deviation from random series for the pattern, reflecting an underlying structure of periodity 15.47m and two directional components(anisotropy). The importance of combining descriptive analysis with competition studies and further experiments to our understanding of vegetation structure and dynamics in this area should be investigated by spectral analysis.
棲息地 環境에 依한 蓴菜의 生態遺傳的 變用에 關한 硏究
朴勝太 全北大學校 生物學硏究所 1980 生物學硏究年報 Vol.1 No.-
The investigation was taken in an attempt to compare ecogenetic relationships of the water shield population by the environmental changes, mainly, related to the nitrogen and phosphorus components which were analysed from soil, water, and plant in eleven sites of the three ponds. Genetic variation in water shield population in elven sites were analysed in the Esterase and Acid Phosphatase by starch gel electrophoresis technique, and the frequencies of their enzyme loci were calculated. The genetic similarities and distances were calculated on the basis of their frequencies of enzyme loci, and environmental correlations of eleven sites were calculated on the basis of the amounts of nitrogen and phosphorus data. The results showed that environmental factors based on the change of amounts of nitrogen and phosphorus did not affect the catastrophic selection level concerning genetic variation and the genetic distances related to the frequencies of enzyme loci of water shield populations.
朴勝太 全北大學校 基礎科學硏究所 1978 基礎科學 Vol.1 No.1
Injury symptoms in lichen transplants have been correlated with the SO_2 concentration prevailing at their exposure site in the Jeonju area from May 8 to Oct. 1978. For this study bark-discs bearing lichens which were identified ten species, were cut out from an unpolluted region. These were attached in cut-out holes on wooden boards and they were fixed at a height of 1.5-3m on a tall tree at each of the 18 sites and in laboratory 20 bark discs treated with H_2SO_4 sol. from 0.1 ppm to 0.5 ppm concentration during same periods. The changes in lichens, especially, Parmelia austrosinensis, P. crinita and P. praesorediso a taking place in the different conditions were compared with respect to internal morphology, biomass, acetone soluble substances, and chlorophyll. The results indicate that the degrees of plasmolysis lead to 5% reduction and biomass values per unit area and the increased production acetone soluble substances of P. austrosinensis, P. crinita and P. praesorediosa were found to be decrosse at reduced levels of pollution. A similar observation has been made for the total damage of chlorophyll with respect to SO_2 pollution also. Taking the chlorophyll content of lichen thallus of control area to be 100 percent, the amount of chlorophyll in thallus of Zone 1, determined by comparing the height of its absorption peak at 663nm, was found to be 95% respectively. The severe injuries by H_2SO_4 sol. are appeared to develop following exposure to 0.3 ppm for 3 months. It should be emphasized that in an ecological study, where the long-range effect of pollution is being monitored with the help of a biological system. Hence, we may say that long-range average concentration of SO_2 below 0.02ppm causes respectively no injury to epiphytes in the Jeonju area.
朴勝太 全北大學校 基礎科學硏究所 1979 基礎科學 Vol.2 No.1
To predict the general form of plant growth, this paper developed the logistic equation and the interpretation of theoretical models for plant growth. The important point of the growth curve in an individual, population and community is called as the half time (t_H). At this point, the growth rate is maximum. The theoretical maximum growth and productivity (K) estimated by growth gradients to be substigtued normal distribution equation. The basic concepts transformed the computer programming and application of the growth of pitch pine (Pinus rigida) planted in Jeonbug area and the growth of yeast population by Carlson data.