• 대한의생명과학회지
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• 제25권4호
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• pp.339-347
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• 2019

Saururus chinensis (SC) belongs to the dicotyledonous plants, and its roots, leaves and flowers are white, so it is named three hundred and seconds. It is mainly distributed in Korea, China and Japan. In Korea, it is a native plant distributed in Jejudo and Jirisan areas. It has been known to improve blood circulation, anticarcinogenic effects and purge. However, studies of the efficacy on digestive system is few. This study was conducted to evaluate the effects of oral administered-SC extract in loperimide-induced constipation rats. The amount, weight and water content of the stools were measured. The number and type of stools in the large intestines were measured, and the amount of intestinal mucus was analyzed by serological analysis and histologic special staining. The severity of constipation in SC groups was significantly less than that in control group (non-SC rats). Digital Image processing also showed weaker inflammation on the large intestines of SC groups than that of control group (non-SC group). Especially, with increased dose dependent manner of SC extract, the amount and integrity of intestinal mucus increased. These results suggest that SC extract may prevent the symptoms of constipation.

• 한국환경생태학회지
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• 제16권4호
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• pp.441-448
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• 2003

백두대간 능선부의 식생구조를 파악하고자, 백두대간 노고단-고리용구간 능선부에 22개의 방형구(500$m^2$)를 선정하여 식생을 조사하였다. 식물군집을 분류한 결과 22개 조사구는 신갈나무-물푸레나무군집, 신갈나무-소나무군집, 신갈나무군집의 3개 군집으로 분류되었다. 백두대간 노고단-고리봉 구간의 능선부는 대부분 신갈 나무가 우점하고 있었으며, 일부에서 해발고가 낮은 지역에서 소나무 등의 침엽수와 낙엽수종들이 혼효하고 있었다. 이 지역에는 우리나라 특산종인 구상나무가 드물게 분포하고 있었다. 조사지의 군집별 종다양성지수는 2..1354~2.9576 범위로 백두대간에 위치한 국립공원들의 능선부 식생구조와 비슷하였다.

• 한국조경학회지
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• 제34권5호
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• pp.52-58
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• 2006

Wildlife roadkill is a serious problem for road planners and biologists concerned with traffic safety, species conservation, and animal welfare. The objective of this paper was to analyze the effect of land use on the frequency of mammal roadkills. This study took part in three steps. First, data for 1,279 road kills of nine species were collected by survey over 26 months on 107km of roads near the Mt. Jirisan area. Second, the type of land use near the roadkill points was analyzed, and the area of each land use within loom of the road was calculated using GIS. Finally, the question of whether the land use affects the Sequency of mammal roadkills was analyzed by determining the density of roadkill occurrences for each land-use type. The results of the study were as follows. First, the roadkill density of all species was highest near grasslands, especially natural grasslands. Second, when comparing forests and rice fields, roadkill densities of the Eurasian red squirrel, Siberian chipmunk and Korean hare were higher near the forests, while the densities of the raccoon dog, water deer and leopard cat were higher near rice fields. The results of this study could be an essential information source for mitigating the roadkill problem in Korea.

• 한국지리정보학회지
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• 제14권4호
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• pp.54-62
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• 2011

현재 세계에 밝혀진 생물종은 160만여 종으로 한국에 밝혀진 자생종은 3만여 종으로 기록되어 있으며, 한국 국립공원 생물종은 1만5천여 종에 이르고 있다. 이 중 한국 국립공원내 멸종위기종은 133종으로 전체 멸종위기종의 60%를 차지하고 있으며, 이들의 보호와 관리를 위해 실질적인 분포와 이들의 서식지 관계에 대한 것을 바탕으로 한 연구가 필요한 실정이다. 본 연구에서는 지리산국립공원 내에 분포하는 동물 개체군을 대상으로 GIS 프로그램을 통해 주요 서식지를 등록하고, 3차원 서식도를 제작함으로써 국립공원에 서식 중인 동물의 보전과 관리를 위한 새로운 방안을 제시하고자 하였다. 동식물보호단 동물좌표 파일과 국립공원 경계 폴리곤파일 및 ASTER GDEM 수치표고모델을 이용하여 서식도를 제작하였다. 최신의 지형정보와 서식지정보의 융합을 통해 구축된 새로운 개념의 동물서식도는 향후, 동물의 종별 보호 관리 계획 및 서식지 보호 계획 시 유용한 정보로 활용될 것이다.

• 한국환경생태학회지
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• 제22권6호
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• pp.609-615
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• 2008

본 연구는 경기도 백운산, 전남 지리산, 백운산, 조계산, 경남 금산 지역 등에 분포하고 있는 히어리개체군을 대상으로 2005년 8월부터 2006년 9월까지 20개의 방형구를 설치하여 자생지의 생태적 특성을 분석하였다. 식물사회학적 방법으로 분류한 결과 히어리개체군은 피나무우점개체군, 소나무우점개체군, 비목나무우점개체군으로 구분되었다. Ordination 분석 결과 피나무우점개체군은 해발고가 높으며, 전질소, 유효인산, CEC의 함량이 높은 입지에 분포하는 것으로 나타났다. 소나무우점개체군은 해발고가 낮고 전질소, CEC, 유효인산의 함량이 적은 입지에 분포하는 것으로 나타났다. 비목나무우점개체군은 해발고가 높고, 전질소, 유효인산, CEC의 함량이 중간인 입지에 분포하는 것으로 나타났다.

• 한국산림과학회지
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• 제105권1호
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• pp.86-92
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• 2016

본 연구는 가문비나무 집단 내 치수형성이 잘 이루어지지 않는 이유를 찾고자 실시하였다. 가문비나무 집단 내 치수형성을 방해하는 타감물질의 존재여부를 확인하고, 타감작용을 일으키는 수종을 확인하기 위해서 타감물질을 추출하여 종자발아 및 유묘생장에 미치는 영향을 조사하였다. 수용성 추출액은 GC/MS를 사용하여 수용성 페놀화합물의 유무를 확인하였다. 가문비나무 집단에서 채취한 주변 경쟁수종 잎의 수용성 추출물은 가문비나무 종자의 발아를 감소시켰으며, 유묘의 생장을 저해하였다. 추출액의 수용성 페놀화합물을 분석한 결과, borneol, Camphor, Longifolen, Longifolenaldehyde, Norbornene, Ketobornane, 1,8-Cineole, ${\alpha}$-Cadinol이 검출되었는데, 이들은 monoterpenoids 화합물로서, 타감물질로 잘 알려진 화합물들이다. 결론적으로, 가문비나무 집단 내 치수형성에 영향을 미치는 인자중의 하나가 주변 경쟁식생들의 타감효과에 의한 것으로 판단된다.

• 동의생리병리학회지
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• 제27권2호
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• pp.233-238
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• 2013

The development of healthy beverages are increasing by big concerns for well-being. The aim of this study is to develop cultivated wild ginseng-Kyungohkgo (CKOG) beverage using cultivated wild ginseng instead of natural wild ginseng for Kyungohkgo. To examine physiochemical properties of CKOG beverage, pH, degree Brix, acidity, Huntor color, particle size and sedimentation volume were measured. When compared with commercial KOG beverage, CKOG beverage was lower in pH, acidity, particle size and higher in sedimentation volume. In the sensory evaluation of CKOG beverage, the best recipe of healthy CKOG beverage was 20% CKOG, 5.7% honey, 0.2% citric acid and 74.1% of water. In stability testing, pH, degree Brix, acidity, Huntor color of CKOG beverage was not changed, microbes in CKOG beverage was not detected for 60 days. These results suggest that CKOG may have a possibility of development as healthy beverage.

• Journal of Forest and Environmental Science
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• 제34권2호
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• pp.169-172
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• 2018

National parks are designated and managed for the purpose of preserving natural ecosystems, nature and cultural scenery, and promoting sustainable utilization in Korea. Since we designated Jirisan as the first Korean national park in 1967, we have now designated and managed 22 national parks. Because these national parks are the core protected areas of the nation and the ecological recreation center for the people, the interests of researchers related to national parks and citizens have steadily increased over the last 50 years. Especially, various natural science researches and social studies on national parks have been conducted with the launch of the Korea National Park Service in 1987, which is dedicated to national park management. However, we still lack research on national park research trends in Korea in spite of the increase in scientific research and public interest. It is important to know who and what institutes are leading national parks research, what research topics have been conducted, what kinds of researches are important in each national park, and how these researches relate to national park management policies. We propose a study to review the national parks related studies that have been carried out so far and identify the research trends. In the pilot study, we collected about 700 research papers on national parks published between 2002 and 2016 through the Korea Citation Index of Korean journals. We are analyzing the number of papers published, research institutes and research topics related to national parks. Analysis of these national park research trends will be necessary for efficient national park management and policy making for future generations.

• 한국한의학연구원논문집
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• 제15권1호
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• pp.1-11
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• 2009

The eminent brother doctors Cho-Gaek Hur (Young Hur) and Cho-Sam Hur (Eon Hur) represent the medical tradition of the southeastern region of Mt. Jirisan incluiding Sancheong. This study investigated and examined their herediatary testimonies and medico-historical facts described in the literature tale, genealogy and family collection of works. At an early age after their family run away to the southern region from the harm of political struggle, they gave up taking the highest-level state examination to recruit ranking officials and set their heart on learning medicine. Their choice of medicine was the second best plan for the survival of their family and descendents from the influence of their ancestors who suffered from the party strife during the late Joseon Dynasty. The case is a good example of the deliberate action of the nobility intellectuals since the late Goryeo and early Joseon dynasties to who made attempts to have the minimum elegance and cause while securing livelihood after they have been collapsed politically. The tale of Cho-Gaek and Cho-Sam is a typical story of eminent doctors which combined reality and fiction about the persons who had outstanding medical skills. In the tale, the elder brother was good at herbal prescriptions and the younger brother was good at acupuncture, contrasting the treatment of administrative internal medicine and insertive acupuncture treatment. It shows that the prepositions for the choice of the treatment method for the public during that period were safety and fast efficacy. In their old age, they wrote a book titled Jinyangsinbang. Another Jinwoosinbang is estimated as a different kind of copy, which was a medical writing from experience that derived from the same original book as Jinyangsinbang. written by Cho-Gaek Hur and it is a valuable medical material that possesses the distinct features of the local medicine during the late Joseon Dynasty. Most of the contents are variations in application using the basis of Dongeuibogam, forming the roots of the traditional Korean medicine in Sancheong region together with the medical activities of the Hur brothers.

• 대기
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• 제22권2호
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• pp.233-243
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• 2012

The Barnes scheme is used in Digital Forecast System (DFS) of the Korea Meteorological Administration (KMA) for real-time analysis. This scheme is an objective analysis scheme with a distance-dependent weighted average. It has been widely used for mesoscale analyses in limited geographic areas. The isotropic Gaussian weight function with a constant effective radius might not be suitable for certain conditions. In particular, the analysis error can be increased for stations located near mountains. The terrain of South Korea is covered with mountains and wide plains that are between successive mountain ranges. Thus, it is needed to consider the terrain effect with the information of elevations for each station. In order to improve the accuracy of the temperature objective analysis, we modified the weight function which is dependent on a distance and elevation in the Barnes scheme. We compared the results from the Barnes scheme used in the DFS (referred to CTL) with the new scheme (referred to EXP) during a year of 2009 in this study. The analysis error of the temperature field was verified by the root-mean-square-error (RMSE), mean error (ME), and Priestley skill score (PSS) at the DFS observation stations which is not used in objective analysis. The verification result shows that the RMSE and ME values are 1.68 and -0.41 in CTL and 1.42 and -0.16 in EXP, respectively. In aspect of spatial verification, we found that the RSME and ME values of EXP decreased in the vicinity of Jirisan (Mt. Jiri) and Taebaek Mountains. This indicates that the new scheme performed better in temperature verification during the year 2009 than the previous scheme.