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국립산림과학원 제주시험림의 서어나무 수간형태와 수간곡선식 추정
정영교 ( Young Gyo Chung ),김대현 ( Dae Hyun Kim ),김철민 ( Cheol Min Kim ) 경상대학교 농업생명과학연구원(구 경상대학교 농업자원이용연구소) 2010 농업생명과학연구 Vol.44 No.4
본 연구는 난대산림연구소의 제주시험림에 있는 서어나무 (Carpinus laxiflora)에 대한 개체목의 수간곡선식 추정 및 재적표를 개발하기 위하여 수행하였다. 최적의 추정식을 선택하기 위하여 Max & Burkhart식, Kozak식 및 Lee식을 적용하여 수간곡선식을 유도한 후, 각 식의 직경 추정에 대한 검정 통계량 및 실측치와 추정치간의 오차분포를 검증하였다. 그 결과 Max & Burkhart식 및 Lee식이 특정 구간에서 과대치 또는 과소 추정치를 보인데 반하여 Kozak식은 전구간에서 고른 분포를 보였다. 추정력이 가장 좋은 Kozak식을 활용하여 수피포함 재적표를 작성하였다. Data was collected to develop equation for predicting stemp taper for Carpinus laxiflora in Jeju Experimental Forests. The Models tested for choosing the best-fit equations were Max & Burkhart`s model, Kozak`s model, and Lee`s model. Performance of the equations in predicting stem diameter at a specific point along a stem was evaluated with fit and validation statistics and distribution of residuals on predicted values. In result, all the three models gave slightly better values of fitting statistics. In plotting residuals against predicted diameter, Max & Burkhart`s model showed underestimation in predicting small diameter and Lee`s Model did the same in predicting small diameter. Based on the above analysis of the three models in predicting stem taper, Kozak`s model was chosen for the best-fit stem taper equations, and its parameters were given for C. laxiflora. Kozak`s model was used to develop a stem volume table of outside bark for C. laxiflora.
냉온대지역 지형 변이 이후 식생 분포 현황 -일본 북해도 기타미시 요시이사와선을 중심으로-
이성기 ( Sung Gie Lee ),안영희 ( Young Hee Ahn ),김대현 ( Dae Hyun Kim ),정영교 ( Young Gyo Chung ),정진현 ( Jin Heon Jeong ) 한국녹지환경디자인학회 2006 녹지환경학회지 Vol.2 No.2
This study recorded the process of recovery from damage. Therefore this study was aimed to get a basic data of vegetation restoration through tracking survey of recovering process after reform construction. In early days after forest road was constructed, there were bare or almost bare ground. Recently vegetation status was surveyed 50 years after it was constructed. Part of forest in the site of this survey is hardly avoiding damage because road improvement is being expected. Therefore damage of vegetation is expected. After 50 years in bare ground, it was restored as total 168 species of 62 families such as 15 species of 7 families in pterophyta, 5 species of 2 families in gymnosperms, and 148 species of 53 families in angiosperms were occurred. Mixed forests of coniferous and broad leaves near forest road were recovered as 31 species such as Abies sachalinensis and Tilia japonica were occurred. If already existed forest roads were reconstructed, damage could be occurred again in very high possibility. Therefore environmentally-friendly construction is required through long-term monitoring.
김대현 ( Dae Hyun Kim ),이성기 ( Sung Gie Lee ),정영교 ( Young Gyo Chung ),정진현 ( Jin Hyun Jeong ) 한국녹지환경디자인학회 2008 녹지환경학회지 Vol.4 No.2
Within the forest inventory of Jeju, the national forest has been rich relative to the average national inventory; however, the private forest has formed merely half of the average national area, and the circumstances for forest management were also demonstrated to be poorer than those of the average national forest management. In the organization of age classes, the rate of schonungen kulturen is relatively lower. Thus, it will lead to an unbalanced growth in the forest and hurt its stability, provided that there is no improvement in the age class` structure, which would make it hard to begin sustainable forest management (SFM). Also, the acreage of forest owned by private forest owners was shown to be only half of the national average. Therefore, it appears to be necessary to introduce collectivism into forest management. The forest management plan establishment rate is merely 1.7%, and it is supposed to create active support for building forestry management plans. After analysis, it was decided to pursue the extension of the forestation area, which is only about an average yearly 100ha, for the forestation of a sustainable forest inventory. It would also be necessary in the forestation of tree species to conduct forest management in consideration of sightseeing by selecting tree species specified for local features. The area in Jeju appropriate for tending as a forest proved to be 2,495~3,209ha, and the producible growing stock proved to be 41,717~62,577m3.
이성기 ( Sung Gie Lee ),안승원 ( Seoung Won Ann ),정영교 ( Young Gyo Chung ),정진현 ( Jin Hoyn Jeong ),신병철 ( Byung Chuel Shin ) 한국녹지환경디자인학회 2008 녹지환경학회지 Vol.4 No.1
As the result realized the main component analysis by extracting the 31 basic geomagnetic bodies, which can be divided in forestry zones of basic geometric body of Fukuoka prefecture, it was divided in 7 kinds in forestry space. With the character appeared according to each form, the first factor is eternal pace management type of the 8 basic geomagnetic bodies like Kurogi; the second factor is asset maintenance of the 8 geomagnetic bodies like Nakagawa; the third factor is suburban type of the 5 geomagnetic bodies like Chikusino; the fourth factor is forestry mountain village of the 4 geomagnetic bodies like Hoshino; the fifth factor is material production zone type of the 4 geomagnetic bodies like Amagi; the sixth factor is the interior zone production type like Yabe; and the seventh factor is the own region type like Ooshima. Therefore, in this paper it was desirably decided that forestry advancement was induced from the first and second factor, and the rests are connected among them.
우훈식,김철한,정영교 대전대학교 산업기술연구소 1999 산업기술연구소 論文集 Vol.10 No.2
The enterprise information modeling is the key concept that implements CALS/EC (Commerce At Light Speed/Electronic Commerce), SCM(Supply Chain Management), EI(Enterprise Integration) for the purpose of business process reengineering. In this study we developed an enterprise information modeling tool far the attempt of providing a GUI(graphical user interface) based modeler which supports FIPS 184 standard. The developed software is designed under object oriented concepts utilizing UML and developed by Visual C++.