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이현직(Lee, Hyun-Jik),문건수(Moon, Geun-Soo),이혁호(Lee, Hyuck-Ho),김종수(Kim, Jong-Su) 한국측량학회 2012 한국측량학회 학술대회자료집 Vol.2012 No.4
As the progress regarding spatial analysis on features such as landscape, sunlight, shadow, and direct ray using third-dimensional simulation begins to develop, researches concerning the creation of 3D geographic models crucial for 3D simulations. This research has created a general equation for the entire lines derived from normal equation using 2D map, and has suggested an algorithm regarding automatization of 3D geographic modeling for post-development situations. The proposal of an automatization method regarding rotating and moving of linear planning would likely be the foundation on which the research concerning 3D geographic modeling automatization using 2D map would be based on; furthermore, additional detailed researches are expected.
김성열 ( Kim Sung-yeol ),문건수 ( Moon Geon-soo ),임성빈 ( Lim Sung-been ),백혜정 ( Paek Hye-jung ),송원경 ( Song Won-kyong ),최재용 ( Choi Jae-yong ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2021 한국환경복원기술학회지 Vol.24 No.2
Phytosociological characteristics on Quercus acutissima forests distribution in Daechong-dam basin survey has been carried out using Z.-M. School’s methodology and numerical-classification analyses. A total of 43 phytosociological releves were sampled. Syntaxa were described as Oplismenus un dulatifolius-Quercus acutissima community(typicum subcommunity, Phryma leptostachya var. asiatica subcommunity, Ulmus davidiana var. japonica subcommunity), Quercus acutissima community and Quercus variabilis-Quercus acutissima community (typicum subcommunity, Castanea crenata subcommunity). The above three plant communities were classified with species composition reflecting local environmental characteristics of mountain topographies, inclination degrees, and rock exposure rates. Conclusively, those communities were recognized as secondary vegetation affected by high intensity and frequency of human impacts as they inhabited in southward hill lands and low lying grounds in mountains adjacent to human settlements and arable lands. Quercus acutissima community was classified as rural type syntax based on their inlandward distribution and species composition differences from urban forests. Afforest process and natural succession were discussed in relation with habitat environmental elements of Quercus acutissima forest in the survey area.
대청댐 유역 굴참나무림의 군락분류학 및 군락생태학적 연구
김성열 ( Kim Sung-yeol ),문건수 ( Moon Geon-soo ),송원경 ( Song Won-kyong ),최재용 ( Choi J Aeyong ) 한국환경복원기술학회 2021 한국환경복원기술학회지 Vol.24 No.6
Syntaxonomy and Synecology on Quercus variabilis forests in Daecheong-dam basin was carried out using the methods of Braun-Blanquet phytosociology. 6 syntaxa classified as species compositions described were Quercus variabilis community, Platycarya strobilacea-Quercus variabilis community(typicum subcommunity, dictamnus dasycarpus subcommunity), Quercetum variabili-serratae, Zelkova serrata-Quercus variabilis community and Dendranthema boreale-Quercus variabilis community. All syntaxa were shown habitat environmental conditions including steep inclination of more than 30°, high rock exposure rate of more than 50% and South-facing slope. These communities excepting Dendranthema boreale-Quercus variabilis community classified as natural vegetation were identified as low emergence rate of annual plants and species compositions composed native species, so it was confirmed that relatively natural succession were proceeding well. Quercetum variabili-serratae and Dendranthema boreale-Quercus variabilis community distributed forested hillslope of open water edge were representative Quercus variabilis syntaxa in Daecheong-dam basin.
김성열 ( Kim Sung-yeol ),박준성 ( Park Jun-seong ),문건수 ( Moon Geon-soo ),최재용 ( Choi Jae-yong ) 한국환경복원기술학회 2021 한국환경복원기술학회지 Vol.24 No.5
A field survey was carried out targeting 59 pine wilt disease control areas distributed in Andong, and the ecological characteristics of the areas affected by pine wilt disease were analyzed using vegetation information, ecological information, and land use information. Vegetation characteristics of Pine wilt disease affected forest area showed a 3-layer vegetation structure, high percentage of accidental occurrence species (37%) and secondary vegetation species (59.6%), appearing 12 taxa naturalized plants and 3 taxa ecosystem disturbance organisms designated by the Ministry of Environment. Ecological information of Pine wilt affected area showed frequent occurrence of water stress in south and west slopes, low lying grounds in mountains, and in well-drained soils. Also, surrounding the area has been used as roads, tombs, and cultivation where intensive human activities were the cause of disturbance and stress to the pine forest. It was analyzed that the pine forest in Andong city suffered extensive damage due to the onset of pine wilt disease while the pine trees were weakened due to continuous human activities. Conclusively, the spread and onset of pine wilt disease are worsened by artificial factors than natural environmental conditions.
항공영상을 활용한 도로개발 전·후 산림 훼손지 개체목 분석
최재용 ( Choi Jae-yong ),김성열 ( Kim Seoung-yeal ),김휘문 ( Kim Whee-moon ),송원경 ( Song Won-kyong ),이지영 ( Choi Won-tae ),최원태 ( Lee Ji-young ),문건수 ( Moon Guen-soo ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2018 한국환경복원기술학회지 Vol.21 No.4
Although the road construction in forest is increasing and there is a need for development ecological restoration on deforest area, no consideration has been given to individual trees in there. This study analyzed aerial photographs of deforest area before and after road construction for determining the degree of forest destruction by extracting individual trees. Study area was selected in the sites where are damaged by road construction in GongJu-si, YuSung-gu, and YeongDong-gun. The aerial photograph taken 1979 before construction is panchromatic image of 80㎝ in GSD (Ground Sample Distance) and other photograph taken 2016 after construction is multi-spectral image of 10㎝ in GSD. In order to minimize the difference of GSD, we conducted image re-sampling process for setting to same GSD for the two photographs. After that we carried out visual interpretation method for de termining to change of individual tree. The result found that for GongJu-si of the number of individual tree was 1,014 in 1979 and 886 in 2016, which decreased by 128 (12.6%) and the average width of those decreased from 5.77m to 5.75m by 0.47%. In case of YoungDong-gun, the number of it was 761 in 1979 and 746 in 2016, which decreased by 2.0% and the average width of it decreased from 8.99mm to 8.90m by 1.1%. Lastly in case of YuSung-gu, the number of it was 1,578 in 1979 and 988 in 2016, which decreased by 37.4% and the average width of it decreased from 7.09m to 6.65m by 6.21%. these result imply that road construction causes destruction of forests. Since there are limitations such as errors due to researcher, it is necessary to construct a quantitative analysis method for the change of the deforest area. It is need to study the method of extracting individual tree in deforest area more accurately using high-resolution image of GSD 10cm or more as well. This study can be used as a basic data for the ecological restoration of the deforest area considering characteristics of individual tree such as height, diameter at breast height, and biomass.
2차원 설계자료를 이용한 3차원 지형모델 자동화 생성 방안
이현직(Lee, Hyun Jik),박은관(Park, Eun Gwan),문건수(Moon, Geun Soo) 대한공간정보학회 2013 대한공간정보학회지 Vol.21 No.1
3차원 시뮬레이션을 이용하여 조망, 일조, 일영, 직광 등 3차원 공간분석에 대한 분야가 발전함에 따라 3차원 시뮬레이션에 필요한 3차원 지형모델 제작에 관한 연구가 필요하게 되었다. 본 연구에서는 법선의 방정식을 이용하여 2차원 설계도면을 3차원 지형모델로 변환함으로써 개발후의 3차원 지형모델을 생성하는 방안을 제시하였다. 2차원 설계로부터 3차원 지형모델 생성을 위한 자동화 알고리즘을 개발하였으며, 향후 세부적인 연구가 필요할 것으로 예상된다. As the progress regarding spatial analysis on features such as landscape, sunlight, shadow, and direct ray using 3D simulation, it is required to research the creation of 3D terrain models crucial for 3D simulations. In this paper, we suggested the methods to create the 3D terrain model for the state after development, by transfer the 2D plan to 3D terrain model using the normal equation. Automated algorithm producing 3D terrain model from 2D plan was developed. And It is expected to be needed more studies detailed.
이현직(Lee Hyun-Jik),한성필(Han Seong-Pil),문건수(Moon Geon-Soo) 대한공간정보학회 2010 한국지형공간정보학회 학술대회 Vol.2010 No.1
본 연구에서는 항공레이저측량을 기법을 이용한 DEM과 기존 1/5000 지형도로 하천의 단면을 만들고 시뮬레이션을 통한 홍수위를 조절하였을 때 두 단면에 대한 침수피해예상을 확인하였다. 피해예상지역 4곳의 피해면적을 산출한 결과 항공레이저측량 기법을 이용한 단면에 대해서 침수피해가 1.63배 더 나오는 것을 확인 하였다. 본 연구 성과를 이용하여 기존 데이터의 정확성이 미약하다는 점을 알 수 있었고, 현장측량을 하면서 생기는 비용과 시간을 최소화하여 예산을 절감시킬 수 있으리라 판단되었다. 또한 설계빈도별에 따른 침수모델링을 통하여 침수피해지역에 대한 예방대책을 세워 홍수피해를 줄이는데 유용한 자료가 될 것으로 판단된다.