신안군의 생태계 교란 식물 분포와 관리방안

조영준(Yeong Jun Cho),고경남(Gyeong Nm Ko),박경옥(Gyeong Ok Park),박우량(Woo Ryang Park),김하송(Ha Song Kim) 한국농어촌관광학회 2021 농어촌관광연구 Vol.24 No.2

The survey was carried out from March 2020 to December 2021. A total of 30 surveys on the distribution of plants disturbing the ecosystem were conducted by dividing the 14 towns and villages in Shinan-gun. As a result, Paspalum distichum var. indutum Shinners was the most widely distributed at 111,624m2, Solidago altissima L. was 12,478m2, and Hypochaeris radicata L. 1,803m2, which was high. Solanum carolinense L., Aster pilosus Willd. and Ambrosia trifida L. were relatively low, but it is expected that the amount of Paspalum distichum var. indutum Shinners and Solidago altissima L. will gradually expand throughout shinan-gun. As a result of comparing the distribution characteristics of plants disturbing the ecosystem in shinan-gun, Paspalum distichum var. indutum Shinners was the highest at 87.2% of the total distribution area, followed by Solidago altissima L., Paspalum distichum L., Rumex acetosella L., Ambrosia artemisiifolia and Lactuca scariola L. The main distribution habitats of Paspalum distichum var. indutum Shinners and Paspalum distichum L. are agricultural waterways and reservoirs (Dumbeom) in paddy fields. Solidago altissima L., Hypochaeris radicata L., Lactuca scariola L., Ambrosia artemisiifolia L., Aster pilosus Willd. and Solanum carolinense L. were ainly found on road borders, fields (battches), and baby swimming on pasture meadows. Major ecosystem disturbances are physical, chemical and biological depending on the plant. It is considered that the biological method to induce restoration of natural ecosystem by transplanting the native species suitable for the habitat would be effective when the distribution area is small. However, comprehensive and long-term countermeasures will be needed as long-term ecosystem restoration plans related to ecosystem disturbance removal are established.

다도해 해상국립공원 대흑산도의 상록활엽수림 식생구조

조영준 ( Cho Yeong-jun ),김하송 ( Kim Ha-song ),명현호 ( Myeong Hyeon-ho ),박정원 ( Park Jung-won ),오장근 ( Oh Jang-geun ) 한국도서(섬)학회 2017 韓國島嶼硏究 Vol.29 No.1

This research was carried out from April of 2014 to January of 2017 in the evergreen broad-leaved forests around Daehuksan Island in Dadohaehaesang National Park. A total of 38 plots were set up in this study area, and plant communities were divided into 8 communities of Castanopsis cuspidata var. sievoldii community, Castanopsis cuspidata var. sievoldii-Pinus densiflora community, Pinus densiflora-Castanopsis cuspidata var. sievoldii community, Castanopsis cuspidata var. sievoldii-Pinus thunbergii community, Pinus thunbergii-Castanopsis cuspidata var. sievoldii community, Machilus thunbergii community, Quercus acuta community and the Camellia joponica community. Overall, in order to extract vegetation units based on the vegetation ecological information of the evergreen broad-leaved forest in Korea Peninsula, a comparasion study was conducted. The distribution area, habitat characteristic and its main distribution of Castanopsis cuspidata var. sievoldii community, Machilus thunbergii community, Quercus acuta community and the Camellia joponica community were compared for this study. The investigated Castanopsis cuspidata var. sievoldii community is a community identified by the Castanopsis cuspidata var. sievoldii. It forms a community in the southwestern slope and valleys of the Daehuksan Island Yeri, Sari, Simri and Sorasi village. The investigated Machilus thunbergii community is a community identified by Machilus thunbergii. It forms a community in and around towns, mostly in Daehuksan Island Yeri, Sorasi and the Mari village. The investigated Quercus acuta community is a community identified by Quercus acuta, and it forms a community in the top of Mt. Munam and the upper part of Viri village. The investigated Camellia joponica community is a community identified by Camellia joponica, and it was distributed around Daehuksan Island Sari, Simri village, and lowlands and the hilly area. However, there were many areas where tree vegetation was disterbed due to human interference. The actual vegetation map produced by the main evergreen broad-leaved forest communities represented the survey area. The main evergreen broad-leaved forest communities represented in the vegetation map were divided into Castanopsis cuspidata var. sievoldii community, Castanopsis cuspidata var. sievoldii-Pinus densiflora community, Pinus densiflora- Castanopsis cuspidata var. sievoldii community, Castanopsis cuspidata var. sievoldii-Pinus thunbergii community, Pinus thunbergii-Castanopsis cuspidata var. sievoldii community, Machilus thunbergii community, Quercus acuta community and the Camellia joponica community. The area of evergreen broad-leaved forest in Daehuksan Island is 58.0% of the total forest area.

다도해해상국립공원 대흑산도의 상록침엽수림 식생구조

조영준 ( Cho Yeong-jun ),김하송 ( Kim Ha-song ),명현호 ( Myeong Hyeon-ho ),박정원 ( Park Jung-won ),오장근 ( Oh Jang-geun ) 한국도서(섬)학회 2018 韓國島嶼硏究 Vol.30 No.1

This research was carried out from April 2014 to January 2018 in the evergreen coniferous forest around Daehuksan Island in Dadohaehaesang National Park. A total of 77 plots were set up in this study area and the plant communities were divided into the following 14 communities : Pinus thunbergii community, Pinus thunbergii -Eurya japonica community, Pinus thunbergii-Camellia japonica community, Pinus thunbergii-Castanopsis cuspidata var. sieboldii community, Pinus thunbergii -Machilus thunbergii community, Pinus thunbergii-Pinus densiflora community, Pinus thunbergii -Eurya emarginata community, Pinus densiflora-Castanopsis cuspidata var. sieboldii community, Pinus densiflora-Machilus thunbergii community, Pinus densiflora -Camellia japonica community, Pinus densiflora-Eurya japonica community, Pinus densiflora-Pinus thunbergii community, Pinus densiflora-Carponus turczaninowii community, and Pinus densiflora community. In the case of dominant species studied in Daehuksan Island, Pinus thunbergii forest was dominated by the dominant species Pinus thunbergii community, Pinus thunbergii -Eurya japonica community, Pinus thunbergii-Camellia japonica community, Pinus thunbergii-Castanopsis cuspidata var. sieboldii community, Pinus thunbergii -Machilus thunbergii community, Pinus thunbergii-Pinus densiflora community, Pinus thunbergii -Eurya emarginata community, and Pinus thunbergii-Mallotus japonicus community. The investigated Pinus thunbergii community is a community identified by Pinus thunbergii, and it formsa community on coastal hillsides and southwestern slopes mainly in the Daehuksan Island Jinri, Eupdong, Mari and Sorasi village. In the case of dominant species studied in Daehuksan Island, Pinus densiflora forest was dominated by the dominant species Pinus densiflora-Castanopsis cuspidata var. sieboldii community, Pinus densiflora-Machilus thunbergii community, Pinus densiflora -Camellia japonica community, Pinus densiflora-Eurya japonica community, Pinus densiflora-Pinus thunbergii community, Pinus densiflora-Carponus turczaninowii community, and Pinus densiflora community. The investigated Pinus densiflora-Castanopsis cuspidata var. sieboldii community is a community identified by Pinus densiflora and Castanopsis cuspidata var. sieboldii, and it is clustered around the villages of Daehuksan Island Jinri, Yeri, Simri and Chilrak mountain and the Northeast slope. In Daehuksan Island, Pinus densiflora community and Pinus thunbergii community are mixed with evergreen broad-leaved forest, and natural transition occurs according to the ecological competition of these communities. The most important dominant species in the tree layer are Castanopsis cuspidata var. sieboldii, Machilus thunbergii, Pinus densifloraandPinus thunbergii. The most important dominant species in the subtree layer are Castanopsis cuspidata var. sieboldii, Eurya japonica, Camellia japonica, Machilus thunbergii, and Mallotus japonicus. The actual vegetation map produced by the main evergreen coniferous forest communities represented the survey area. The main evergreen coniferous forest communities represented in the vegetation map were divided into Pinus densiflora -Carpinus turczaninowii community, Pinus densiflora-Castanopsis cuspidata var. sievoldii community, Pinus thunbergii-Camellia japonica community, Pinus thunbergii-Castanopsis cuspidata var. sievoldii community, Pinus densiflora-Camellia japonica community, Pinus thunbergii-Eurya japonica community, Pinus thunbergii-Machilus thunbergii community, Pinus densiflora community, Pinus thunbergii community, and Pinus densiflora-Machilus thunbergii community. The area of evergreen coniferous forest in Daehuksan Island is 43.52% of the total forest area.

변동요금제 대응 VRF 제어 알고리즘 개발에 관한 연구

조영준(Yeong-jun Cho),김민석(Min-seok Kim),태상진(Sang-jin Tae),이제헌(Je-hyeon Lee),최동석(Dong-seok Choi),김영수(Young-soo Kim),송영학(Young-hak Song) 대한설비공학회 2015 대한설비공학회 학술발표대회논문집 Vol.2015 No.6

Evaluation of β ig-h3(TGF-β-induced matrix protein) as a urinary marker for renal allograft nephropathy

조영준 ( Jo Yeong Jun ),( Y. L. Kim ),( D. H. Lee ),( D. K. Cho ),( H. J. Yun ),( D. Lee ),( E. Bae ),( J. S. Bae ),( S. H. Lee ),( E. K. Lee ),( I. S. Kim ) 대한신장학회 2002 춘계학술대회 초록집 Vol.21 No.1

안테나 개수에 따른 상향링크와 하향링크 분리 연구

방석영(Seok-Yeong Bang),조영준(Young-Jun Cho),김민재(Kim-Min Jae),이상연(Sang-Yeon Lee),이종석(Jong-Seok Rhee),홍인기(Een-Kee Hong) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

LTE에서 이기종 네트워크(Heterogeneous network)와 DUDe(Downlink/Uplink Decoupling)기술은 채널 간 간섭을 완화시키고, 셀 용량을 증가시켜주는 중요한 기술이다. 매크로 셀(Macro Cell) 안에 복수 개의 소형 셀(Small Cell)을 설치해 UE가 여러 유형의 엑세스 노드를 사용할 수 있게 하였고, UE(user equipment)가 상 · 하향링크를 각각 최적화된 채널을 생성할 수 있는 기지국에 독립적으로 연결할 수 있게 해주었지만, 여기에 다중 안테나 기술(MU-MIMO, Beamforming)을 적용하면 안테나 개수를 늘리면 Coverage를 더 넓힐 수 있고, 셀 용량을 더 늘릴 수 있는 것처럼 더 좋은 효과를 볼 수 있다. 본 논문에서는 상 · 하향링크 분리를 이기종 네트워크 환경에서 시뮬레이션 하고, 매크로 셀, 소형 셀, UE의 안테나 개수를 늘려가며 채널 용량과 DUDe Zone 범위를 분석한다. 안테나 수가 많아지면 독립적인 채널의 수가 증가하고, 복수의 UE에 각각 다른 데이터를 동시에 전송 및 수신할 수 있게 된다. 안테나 수를 비교하여 확인한 결과, 안테나 수가 많을 때 Cell에서 수용 가능한 사용자 수가 많았으며, 더욱 넓은 Coverage를 갖게 된다는 것을 확인했다. 즉, 안테나 수를 증가시키면, 더욱 많은 UE가 DUDe를 잘 활용할 수 있는 환경이 될 수 있다.

제조업에서 AI기술 적용을 위한 정보기술 융합 사례 연구

임형준(Hyung-Jun Yim),김태현(Tae-Hyun Kim),김혜린(Hye-Rin Kim),양민혁(Min-Hyuk Yang),홍윤식(Yoonsik Hong),서휘(Seo Hwi),조영준(Yeong-Jun Cho) 한국정보과학회 2020 정보과학회지 Vol.38 No.8

변산반도국립공원 꽝꽝나무군락의 생태적 특성

김하송(Ha-Sing Kim),조영준(Yeong-Jun Cho),이지희(Ji-Hee Lee),오도일(Do-Il Oh),명현호(Hyun-Ho Myeong),이정윤(Jung-Yun Lee) 국립공원연구원 2022 국립공원연구지 Vol.13 No.1

변산반도국립공원에 분포하는 꽝꽝나무군락 서식지 보전 및 복원을 위하여 군락 분포지역을 중심으로 식물상과 주요 식생에 대한 생태학적 특성을 조사하였다. 꽝꽝나무군락 주변에서 총 22과 21속 32종 4변종 총 36분류군이 조사되었다. 꽝꽝나무군락 주변 지역을 중심으로 근접거리에서 식생은 산지침엽수림인 소나무-졸참나무군락(Pinus densiflora-Quercus serrata community)으로 나타났으며(북위 35° 39′ 18.62″, 동경 126° 34′ 56.70), 해발고도 85m~95m, 경사도 10°~15°, 남사면과 남서사면을 중심으로 군락을 이루고 있었다. 교목층에서는 소나무, 졸참나무, 굴참나무, 잔털벚나무 등이, 아교목층에서는 졸참나무, 굴참나무, 잔털벚나무, 때죽나무, 당단풍 등이, 관목층에서는 꽝꽝나무, 진달래, 조록싸리, 쇠물푸레, 청미래덩굴, 생강나무, 물푸레나무, 철쭉, 감태나무, 노간주나무 등이 나타났다. 변산반도 꽝꽝나무군락 자생지역은 과거에 부암댐이 조성되기 전에는 주변이 논, 밭 경작지였지만, 부암댐이 완공된 후, 부안댐 주변에서 발생한 안개와 습도와 같은 기후환경 변화로 인하여 꽝꽝나무군락 자생지 주변 교목층과 아교목층에서 졸참나무 피도가 증가되고, 관목층에서 쇠물푸레, 물푸레나무, 생강나무 등이, 초본층에서 조릿대, 땅비싸리, 그늘사초, 쇠물푸레 등이 출현하면서 군락내의 종구성 변화가 나타날 것으로 생각된다. 꽝꽝나무군락의 분포면적 384㎡으로 측정되었고, 꽝꽝나무 수고는 2.2~2.5m 범위에 속하며, 꽝꽝나무 성목의 뿌리 줄기부분의 직경은 Ø48.5㎜+39.4㎜+46.9㎜+37.3㎜으로서 꽝꽝나무군락 지역의 안정적인 관리 및 보호로 인하여 양호한 생육상태로 생각된다. 또한 꽝꽝나무군락 자생지 주변의 소나무-졸참나무군락에서 관목층과 초본층의 구성종으로 꽝꽝나무가 점점 확산될 것으로 예상되기 때문에 향후, 이들 지역에 대한 정밀조사와 지속적인 보존과 복원을 위한 모니터링이 필요할 것으로 생각된다. In order to preserve and restore the habitats of Ilex crenata community distributed in Byeonsanbando National Park, the ecological characteristics of flora and major vegetation were investigated centered on the community distribution area. A total of 36 taxa with 22 families, 21 genera, 32 species, and 4 variants, were investigated in the vicinity of the Ilex crenata community. At close distances centered on the area around the Ilex crenata community, the vegetation was found to be a mountain coniferous forest called Pinus densiflora-Quercus serrata community(35° 39′ 18.62″ north latitude, 126° 34′ 56.70 east longitude), at an elevation of 85m to 95m above sea level, an inclination of 10° to 15°, and clustered around the south and southwest slopes. In the Tree-1 layer, there are Pinus densiflora, Quercus serrata, Quercus variabilis, and Prunus serrulata var. pubescens. In the Tree-2 layer, there are Quercus serrata, Quercus variabilis, Prunus serrulata var. pubescens, Styrax japonicus, and Acer pseudo-sieboldianum. In the Shrub layer, there are Ilex crenata, Rhododendron mucronulatum, Lespedeza maximowiczii, Fraxinus sieboldiana, Smilax china, Lindera obtusiloba, Fraxinus rhynchophylla, Rhododendron schlippenbachii, Lindera glauca, Juniperus rigida var. rigida. In the past, before the Buam Dam was built, the surrounding area was a rice paddy field and farmland, but after the Buam Dam was completed, due to changes in the climatic environment, such as fog and humidity, which occurred around the Buan Dam, It is predicted that changes in species composition within the community will appear as the blooming of Quercus serrata increases in the Tree-1 layer and Tree-2 layer, as Fraxinus sieboldiana, Fraxinus rhynchophylla, Lindera obtusiloba, etc. appear in the shrub layer, and Sasa borealis Indigofera kirilowii, Carex lanceolata, and Fraxinus sieboldiana, etc. appear in the herb layer. The distribution area of Ilex crenata community was measured to be 384㎡, the height of Ilex crenata was in the range of 2.2 to 2.5m, and the diameter of the rhizome of Ilex crenata community was Ø48.5mm+39.4mm+46.9mm+37.3mm, It is considered to be in good growth condition due to the stable management and protection of the colony area. In addition, as it is expected that Ilex crenata community will gradually spread as a constituent species of the shrub layer and the herbaceous layer in the pine and Ilex crenata community communities near the native habitats of the black oak community, a detailed investigation into these areas and monitoring for continuous conservation and restoration are needed in the future.

영상처리를 이용한 회전체 진동측정 시스템 개발

김동규(Dong Kyu Kim),조영준(Yeong Jun Cho),박기환(Kyi Hwan Park) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.4

대흑산도 삼림식생의 조풍해에 관한 연구

김하송 ( Kim Ha-song ),조영준 ( Cho Yeong Jun ),오동선 ( Oh Dong Sun ),홍현승 ( Hong Hyun Seong ),명현호 ( Myeong Hyeon-ho ),오장근 ( Oh Jang-geun ) 한국도서(섬)학회 2016 韓國島嶼硏究 Vol.28 No.4

In this study, the spatio-temporal patterns of salty wind by typhoon in Daeheuksan Island and their damage to windbreak forests are examined. To investigate these patterns, vegetation survey and meteorological data analyses were conducted after the attack of typhoon BOLAVEN in late August, 2012. Collected data shows that salty wind damage in windbreak trees by the typhoon was distinct in the eastern coastal areas, due to the easterly gusts with less precipitation. The coniferous forests that grow wild in Daeheuksan Island were affected. The coniferous forest area status affected by the salty wind are follows: The grade Ⅰ area(severe damage) was 1,770,886.2㎡(8.29%), Grade 2 area(medium damage) was 1,246,763.7㎡(5.83%), grede 3 area(weak damage) was 1,197,624.9㎡(5.60%), and grede 4 area (no damage) 5,692,474.1㎡ (26.64%). The major community area of forest damage affected salty wind are follows: The grade Ⅰ area(severe damage) was the Pinus thunbergii community and Pinus thunbergii mixed forest, Grade 2 area(medium damage) was the Pinus thunbergii-Eurya japonica community, grade 3 area(weak damage) was the Pinus thunbergii-Camellia japonica community, and grade 4 area(no damage) was the Pinus densiflora-Eurya japonica community. A major regional coniferous forest damage status in Daeheuksan was all mainly from the easterly direction of the island, The Yeri village and the surrounding meteorological observatory. These results indicate that prediction and proactive activities for salty wind are needed in order to reduce its damages to the coniferous forest(Pinus densiflora, Pinus thunbergii), especially before the arrival of dry typhoon accompanying a gusty wind. More fundamentally, database on the forest vegetation of Korea`s coastal areas is needed in order to prepare for the typhoon.