종 분포 모형을 이용한 구상나무림의 지속 및 쇠퇴에 관한 연구 - 전라남도 광양시 백운산을 중심으로 -

조선희 ( Seon Hee Cho ),박종영 ( Jong Young Park ),박정호 ( Jeong Ho Park ),이양근 ( Yang Geun Lee ),문이만 ( Lee Man Mun ),강상호 ( Sang Ho Kang ),김광현 ( Gwang Hyun Kim ),윤종국 ( Jong Guk Yun ) 한국산림과학회 2015 한국산림과학회지 Vol.104 No.3

The present study investigated the habitats of Korean fir trees (Abies koreana E. H. Wilson) on Mt. Baekwun (Baekwun-san), determined the current distribution, quantified the contribution of biological and nonbiological environmental factors affecting the distribution, derived actual and potential habitats, presented a plan for the establishment of protected areas, applied RCP 8.5 climate change scenario to analyze the effects of climate change on the future distribution of Korean fir trees, and predicted future potential habitats. According to the results of the study, 3,325 Korean fir trees (DBH >= 2.5 cm) inhabited Mt. Baekwun, and their distribution area was approximately 150 ha. Populations of Korean fir trees were confirmed to exist at an altitude of 900 m above sea level and were distributed up to 1,200 m. Based on potential distribution, areas appropriate for habitation by Korean fir trees were analyzed to be 450 ha, three times the current distribution area, with a focus on Sang Peak (Sang-bong), Eokbul Peak (Eokbul-bong), Ddari Peak (Ddari-bong), and Dosol Peak (Dosol-bong). The forest stands near Sang Peak, the main peak, were evaluated as those with the most appropriate potential for the habitation of Korean fir trees, and populations of the trees tended to prefer the northern slope rather than the southern slope. When climate change scenario RCP 8.5 was applied and future potential distribution was analyzed, the habitats were expected to decrease in area to 20 ha by 2050, with a focus on Sang Peak, and areas appropriate for habitation were predicted not to exist by 2080. Judging from such results, as global warming accelerates, the habitats of Korean fir trees are clearly expected to move from lowlands to highlands.

Evaluation of Water Quality Using Multivariate Statistic Analysis with Optimal Scaling

Sang Soo Kim,Hyun Guk Jin,Jong Soo Park,Jang Sik Cho 한국데이터정보과학회 2005 한국데이터정보과학회지 Vol.16 No.2

Principal component analysis(PCA) was carried out to evaluate the water quality with the monitoring data collected from 1997 to 2003 along the coastal area of Ulsan, Korea. To enhance evaluation and to complement descriptive power of traditional PCA, optimal scaling was applied to transfoirn the original data into optimally scaled data. Cluster analysis was also applied to classify the monitoring stations according to their characteristics of water quality.

Barrier-Thickness Dependent Strain Relaxation in InGaAs / GaAs Multiple Quantum Well Structure

Sang Koo Park,In Kim,Weon Guk Jeong,Byung Doo Choe 대한전자공학회 1996 대한전자공학회 학술대회 Vol.1996 No.1

Molecular Cloning of the Gene Coding for 3-Isopropylmalate Dehydrogenase of Kluyveromyces fragilis

Park, Sung Hee,Lee, Dong Sun,Woo, Ju Hyung,Kim, Jong Guk,Hong, Soon Duck 한국산업미생물학회 1990 한국미생물·생명공학회지 Vol.18 No.3

Shuttle plasmid vector인 pHN114를 이용하여 Kluyveromyces fragilis의 3-siopropylmalate dehydrogenase 유전자를 cloning하였다. 그 결과 Saccharomyces cerevisiae의 leu2변이와 E. coli의 leuB변이를 상보하는 두 가지의 clone체 pJK104와 pJK106을 얻었다. Restriction mapping 결과 이들은 서로 반대방향으로 삽입되어 있었으며 expression activity는 pJK104가 높았다. pJK104에 삽입된 유전자를 BgⅢ와 SaⅡ으로 끊은 1.6kb fragment를 probe로 하여 Southern Hybridization한 결과 유전자의 유래가 Kluyveromyces fragilis임을 확인하였다. In order to clone the gene coding for 3-isopropylmalate dehydrogenase of Kluyveromyces fragilis, a shuttle plasmid vector pHN114 was used. It can serve as a cloning vector in Saccharomyces cerevisiae DBY746 for other Sau3AI-cleaved DNA segment of Kluyveromyces fragilis. Two cloned fragments which complement the leu2 mutation of Saccharomyces cerevisiae and E. coli were obtained. Their length was 4.4 kb an 3.5 kb, and their orientation was opposite each other. From the fact that the two recombinant plasmids were expressed in Saccharomyces cerevisiae and E. coli, probably the two inserts had the promoter of Kluyveromyces fragilis and that of Kluyveromyces fragilis was efficiently assosiated with RNA polymerase of Saccharomyces cerevisiae and E. coli. According to the result of Southern hybridization, we thought that the cloned fragment has low homology with 3-isopropylmalate dehydrogenase coding region of E. coli and Saccharomyces cerevisiae.

Reduction of As Carryover by Ph3 Overpressure in Metalorganic Vapor Phase Epitaxy

Sang Wan Ryu,Weon Guk Jeong,Hee Dae Kim,Hak Hwan Kim,In Kim,Byung Doo Choe,Seoung Hwan Park 대한전자공학회 1996 대한전자공학회 학술대회 Vol.1996 No.1

Geometrical Characteristics and Atomic Charge Variations of Pd(II) Complexes [Pd(L)Cl₂] with an Axial (Pd·O) Interaction

Park, Jong-Keun,Cho, Yong-Guk,Lee, Shim-Sung,Kim, Bong-Gon Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.1

Geometrical structures of [Pd(L)$Cl_2$] with oxathia macrocycles have been calculated using ab initio secondorder Moller-Plesset (MP2) and Density Functional Theory (DFT) methods with triple zeta plus polarization (TZP) basis set level. In optimized Pd(L)$Cl_2$ complexes, Pd(II) locates at the center surrounded by a square planar array of two sulfurs on an oxathia macrocycle and two chlorides. The endo-Pd(II) complexes with an axial (Pd${\cdots}$O) interaction are more stable than the exo-Pd(II) complexes without the interaction. In the endo-Pd(II) complexes, the atomic charge of the oxygen atom moves to Pd(II) via the axial ($Pd{\cdots}$O) interaction and then, the charge transfer from Pd(II) to the S-atoms occurs stepwise via ${\pi}$-acceptors of the empty d-orbitals.

PD Occurrence Characteristics according to Voltage and Time in Solid Insulator

Sung-Hee Park,Dal-Woo Shin,Kee-Joe Lim,Young-Guk Park,Sung-Hwa Kang 대한전기학회 2003 KIEE International Transactions on Electrophysics Vol.3C No.1

고품질 내습성 지황 “세강”

Sang Hoon Lee,Chun Geon Park,Jeong Hoon Lee,Yeon Bok Kim,Young Guk Kim,Seon Woo Cha,Gwan Hou Kim,Hyo Jin Kim,Chang Suk Huh,Sang Won Lee 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.05

Background : This study was development of moisture tolerance and high-yielding Rehmannia glutinosa cultivar. Methods and Results : Segang is developed by the medicinal crop breeding team of National Institute of Horticulture and Herbal Science(NIHHS), Rural Development Administration(RDA), during the period from 2005 to 2015. The reproduction of Rehmannia glutinosa has been accomplished mainly by vegetative propagation with its seedlings have many variants. The cultivar was selected from seedling of Jihwang 1(check variety). The plant type of Segang is some rising from ground. Regional yield trials conducted at three site from 2014 to 2015. The root yield of Segang was 21.1ton per hectare, which was increased 12% compared with Jihwang 1. Also, Segang has higher catalpol content and dried root ratio compared with Jihwang 1. Conclusion : Segang is a moisture tolerance and high-yielding Rehmannia glutinosa cultivar.

Integrity Evaluation of Ice Plugged Pipes Applied on Short Jacket

Park, Yeong-Don,Son, Geum-Su,Yun, Doo-Ri,Ha, Byeong-guk,Hwang, Sang-Moon,Kang, Beom-Soo 한국원자력학회 2002 Nuclear Engineering and Technology Vol.34 No.2

Effect of p-Phenylenediamine Application to Rat Skin on the Liver Oxygen Free Radical Systems

Park, Hye-Jung,Lee, Sang-Hee,Yoon, Chong-Guk 대한의생명과학회 2003 Journal of biomedical laboratory sciences Vol.9 No.2

To evaluate the influence of hepatic oxygen free radical systems on liver injury by topical p-phenylenediamine (PPD) application on rat skin, PPD (25 mg/16.5 $\textrm{cm}^2$) was topically applied to the abdominal region 5 times every other day and sacrificed. By PPD treatment, increasing rate of liver weight/body weight (%), serum activities of alanine aminotransferase and aspartate aminotransferase and decreasing rate of microsomal glucose-6-phosphatase activity were higher in the rats fed tungstate supplemented diet than those fed a standard diet. These findings indicate that group fed tungstate supplemented diet have more severe liver injury compared with group fed standard diet on topical PPD application. However, the activities of oxygen free radical generating enzymes such as xanthine oxidase (XO) and cytochrome P450 dependent aniline hydroxylase and those of oxygen free radical scavenging enzymes were not found to be different between these two animal groups. In the present study, a novel monitoring method to detect the generating of oxygen free radicals in liver extract was devised. Throughout this method, the oxidized PPD produced by oxygen free radicals was determined colorimetrically. The increasing rate of PPD oxidation by liver homogenate was higher in tungstate fed animals than in standard diet fed ones. Among the fractionations of liver extract, the mitochondrial and postmitochondrial fractions in the liver extract of tungstate fed animals led to a higher availability of PPD oxidation by PPD treatment compared with standard diet fed ones. In conclusion, these results suggest that an enhanced liver injury in tungstate fed animals treated with PPD may be due to oxygen free radicals produced in other systems except oxygen free radicals generating from cytosolic XO system. Especially, oxidative availability by PPD can be used for oxygen free radical detection in some tissue.