• 한국자원식물학회지
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• 제28권4호
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• pp.456-474
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• 2015

We have investigated the flora of Yeongheungdo Island in Ongjin-gun, Incheon. A total of 13 separate field trips were carried out from March 2012 to October 2013. As a result, 302 taxa including 80 families, 211 genera, 261 species, 6 subspecies, 31 varieties and 4 forms were identified. These include the following: 1 taxon protected under the Act on the Protection and Management of Wildlife, 3 Korean endemic taxa, 8 floristic indicator species including 2 taxa of grade V, 3 of grade II and 3 of grade I, 33 naturalized taxa with the naturalization rate of 10.9% and 1 northern taxon vulnerable to climate change.

• 식물분류학회지
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• 제53권1호
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• pp.69-77
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• 2023

Leuzea chinensis (S. Moore) Susanna (Asteraceae), a previously unrecorded species in Korea, was found in Yeongdeok-gun, Gyeongsangbuk-do. Symplocos nakaharae (Hayata) Masam. (Symplocaceae), which had been recorded in the literature but whose native habitat was yet to be identified, was found in Geojedo Island, Gyeongsangnam-do. It was confirmed that Epilobium parviflorum Schreb. (Onagraceae) grew naturally on the islands of Jeollanam-do. Detailed morphological descriptions and geographical distribution of the three taxa are provided.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1128-1130
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• 2003

This study investigated interannual variations in Northeastern Asian vegetation activity inferred from NOAA/AVHRR data during 1984 to 1993. Firstly, original NOAA/AVHRR data was radiometrically and atmospherically corrected in order to produce a consistent and calibrated time series NDVI by eliminating the effect of atmospheric effects and sensor degradation. Next, the NDVI data was analyzed to detect terrestrial ecosystem responses to climate change. A larger increase in growing season NDVI magnitude was observed in Northeastern Asia. Especially, vegetation activity is increasing in north part of Northeastern Asia. However, satellite drift and eruption effect have affect on interannual NDVI variations and it has affected the result in some degree. To improve accuracy of the result, it is necessary to correct these effects.

• 동굴
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• 제69호
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• pp.33-47
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• 2005

The purpose of this study is to grasp the distribution characteristic of tour cave in northeastern Asia. It is examined to use internet homepage to get the status of tour cave in northeastern Asia. First, the total of tour cave is 116 and, in type limestone cave is extremely many. Second, the distribution character by nation has been shown China, Japan and South Korea in sequence. In the type tour cave, China, South Korea and North Korea are more popular with limestone cave while Japan, Taiwan, and Hong Kong have more marine caves. This study mainly relies on the research of internet homepage. Therefore, after this, activated research about tour cave is needed through comparison and analysis with more concrete statistical data and tourist behaviour by nations

• 한국자원식물학회지
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• 제27권4호
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• pp.333-336
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• 2014

지중해 연안의 남유럽과 서남아시아 원산으로 전 세계에 널리 퍼져 분포하는 귀화식물인 Trifolium resupinatum L.(콩과)을 전라남도 진도의 의신천 제방에서 발견하였다. 이 귀화식물은 같은 속의 식물들에 비해 뒤집힌 꽃을 갖는 특징으로 쉽게 구분되며, 이 특징에 따라 거꿀꽃토끼풀이라는 국명을 새로 지었다.

• 식물분류학회지
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• 제52권1호
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• pp.54-63
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• 2022

벚나무류 (Prunus subg. Cerasus)는 가로수 및 조경수로 전국에 가장 많이 식재하지만 외형으로 식별이 어려워서 종별 수량은 관리되지 않고 있다. 다양한 벚나무류가 식재된 성남시 분당구 분당중앙공원과 인접 지역의 식재유형과 종 구성 등의 실태를 파악하고, 조경수목 식재 관리 필요성을 논의하고자 하였다. 벚나무류의 개화기인 2021년 4월에 성남시 분당구 일대 약 6 km² 내에 식재된 벚나무류 총 5,866주를 조사하였다. 이 중 5,744주는 11분류군으로 구분하였으며, 나머지 122주는 복합적인 외부형태 특징을 보였다. 소메이요시노벚나무(Prunus ×yedoensis Matsum.)가 가장 높은 비중(52.1%)을 차지하였고, 잔털벚나무(P. serrulata Lindl. var. pubescens (Makino) Nakai), 벚나무(P. jamasakura Siebold ex Koidz.) 등의 순으로 나타났다. 제주도에 자생하는 왕벚나무(P. ×nudiflora (Koehne) Koidz.)는 본 조사에서 확인되지 않았다. 미소한 특징으로 구분되는 벚나무류의 식별을 돕고자 주요 조경용 벚나무류 11분류군에 대한 검색표를 제시하였다. 벚나무류는 자연 상태에서도 빈번하게 종간 잡종을 형성하는 것으로 알려져 있다. 외래 벚나무류와의 잡종화와 이에 따른 유전자 이입에 의해 자생종의 유전적 고유성이 손실되는 것을 막기 위해서는 자생지 주변의 식재 수종 관리와 원산지 추적이 필요하다.

• Animal Systematics, Evolution and Diversity
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• 제28권4호
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• pp.279-290
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• 2012

Plecoglossus altivelis (ayu) is an amphidromous fish widely distributed in Northeastern Asia from the East China Sea to the northern Japanese coastal waters, encompassing the Korean Peninsula within its range. The shore lines of northeastern region in Asia have severely fluctuated following glaciations in the Quaternary. In the present study, we investigate the population genetic structure and historical demographic change of P. altivelis at a population level in East Asia. Analysis of molecular variance (AMOVA) based on 244 mitochondrial control region DNA sequences clearly showed that as the sampling scope extended to a larger geographic area, genetic differentiation began to become significant, particularly among Northeastern populations. A series of hierarchical AMOVA could detect the genetic relationship of three closely located islands between Korea and Japan that might have been tightly connected by the regional Tsushima current. Neutrality and mismatch distribution analyses revealed a strong signature of a recent population expansion of P. altivelis in East Asia, estimated at 126 to 391 thousand years ago during the late Pleistocene. Therefore it suggests that the present population of P. altivelis traces back to its approximate demographic change long before the last glacial maximum. This contrasts our a priori expectation that the most recent glacial event might have the most crucial effect on the present day demography of marine organisms through bottleneck and subsequent increase of effective population size in this region.

• 대기
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• 제26권1호
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• pp.193-201
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• 2016

An anomalous cold-weather period occurred during January 2011 in East Asia, and this study investigates the event by focusing on the blocking phenomena formed at Northeastern Asia. The area of cold weather is determined to represent the characteristic features of abnormal cold temperature. The 2010/11 winter is divided into three periods P1, P2 (cold period), and P3. For the cold area ($30-50^{\circ}N$, $115-135^{\circ}E$) the corresponding cold period P2 is determined to be 39 days from 23 December 2010 through 30 January 2011. During P1 and P3 temperature anomalies from the climatological mean are small with large standard deviation compared to those of P2, which has large negative anomaly and small standard deviation. The period P2 is dominated by blocking, which was determined by distributions of 500-hPa geopotential height and potential temperature on the 2 PVU surface. Correlation-coefficient analyses show that during P2 the temperature in the cold area is related with pressure of Northeastern Asia, while the temperature during P1 and P3 is related with pressure of Northwest of Korea. Also, during P1 and P3 the temperature pattern shows eastward propagation, but during P2, a stationary pattern. All the observations imply that, during the cold period P2, the temperature in the cold area is related with blocking in Northeastern Asia. During P1 and P3 temperature pattern is related with 500-hPa geopotential height in Siberia, and this relationship is also observed in the climatological mean state.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.2271-2302
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• 2008

The purpose of this research is to develop a tourism product that connects Northeast Asia and Korea by maximizing the geographical advantages in North Korea. Although Northeast Asia has enjoyed the tremendous amounts of potentials such as the natural, historical and cultural resources, some political and social limitations have prohibited its wider development of Tourism.

• 한국환경과학회지
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• 제15권2호
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• pp.107-119
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• 2006

This research reviews the current state of the environmental problems in Northeastern Asia and emphasizes the necessity of building a sustainable regime of multilateral environmental cooperation. The Process and problems of multilateral environmental cooperation system are briefly discussed. This research stresses the importance of contractual environment that enhances the level of enforcement of international environmental agreement. Within the contractual environment, international regimes can support the parties of conference to build up administrative capacity and scientific technology to cope with transborder pollution problems. Some policy proposals such as cooperation among central governments and local governments, and the participation of NGOs are suggested.