• 한국조경학회지
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• 제33권4호
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• pp.79-96
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• 2005

This study is to suggest the technique of ecological park to compatible mountain ecosystem near the urban in Woomyeonsan Urban Nature Park. It was proposed to differential technique from established ecological park focused on changing the cognition of nature, wetland ecosystem protection and restoration, and studying by served sound leisure program(nature observation and experience, etc.), in compatible mountain and urban forest near the Urban. Firstly, to achieve this aim, it was carried out delicated research and analysis that were the angle of inclination, trail, fauna, actual vegetation, bird and insect, and then to selected nature trail course and analysis capability through it.. In the basic concept and plan, firstly to make park aid mark and foundation mark, and then to establish the detail programs, nature observation program, management and organization program. This site where valley and mountain coexist was highly capable but whole site was very steep, so usable area is very narrow. To make Woomyeonsan nature ecological park escape from the established wetland type, ecological park and the park of event have to use nature material and introduce visitor. To establish it as the Nature Culture observation park and reflect on forest, valley of Woomyeonsan was divided into three display places; Nature ecosystem Zone, Meditation Zone, Nature Culture experience Zone and Nature Culture observation Center. For satisfying with ecological park aid mark and foundation mark, it was proposed to settle management plan for volunteer control and organization composition.

• The Korean Journal of Ecology
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• 제21권6호
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• pp.779-789
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• 1998

The forest vegetation established on Mt. Hwangryung located in Pusan, southern Korea was analyzed through phytosociological procedure. Vegetation of the study area was categorized into 14 communities, 16 groups, and 13 subgroups. Vegetation units obtained from such an analysis were shown in a detailed vegetation map (scale 1:5,000). Ecological characteristics of each vegetation unit were discussed on the basis of the principle of restoration ecology. From those results, it was confirmed that some introduced vegetation under excessive artificial interference was in unstable state and then ecological restoration was needed. On the other hand, ecological information and management systems to maintain the urban forest as ecologically healthy state were developed using GIS.

• 한국산림과학회지
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• 제110권4호
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• pp.543-553
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• 2021

피톤치드는 식물체에서 방출되는 생물유래 휘발성유기화합물(BVOCs)에 포함되어있는 isoprene, monoterpene, sesquiterpene과 같은 화합물들 형태로 존재한다. 또한 피톤치드는 중요한 산림치유 인자인 동시에 질소화합물과 광학반응을 하여 오존 및 이차 유기에어로졸 생성에 영향을 미치는 물질로 보고되고 있다. 본 연구에서는 우리나라 도시숲 주요 30 수종을 선정하여 표준환경조건(온도: 30℃, 광도: 1,000 μmol/m²/sec)에서 400 L Tedlar bag의 순환형 챔버를 이용하여 시료를 포집하여 열탈착-GC/MS로 분석하였고, 해당 수종의 잎을 건조시켜 건중량 당 수종별 isoprene 및 terpene류의 방출량을 분석하였다. Isoprene 방출량은 전체 수종 중에서 왕대에서 가장 높았으며 졸참나무, 굴거리나무, 회양목이 주요 isoprnen 방출 수종으로 나타났다. Monoterpene 방출량은 리기다소나무에서 가장 높았으며 고로쇠, 일본잎갈나무, 백목련, 메타세쿼이아, 잣나무, 소나무, 전나무가 주요 monpterpene 방출 수종으로 나타났다. Monotrerpene 주요 물질은 α-pinene, myrcene, limonene, β-pinen, sabinene이였으며, sesquiterpene의 주요 물질은 caryophyllene, farnesene으로 나타났다. Oxygenated monoterpene의 주요 물질은 pulegone, borneol, menthol, eucalyptol, nerol이였고 oxygenated sesquiterpene에서는 carypphyllene oxide가 주요 물질로 검출되었지만 30개 수종에서 sesquiterpene과 oxygenated sesquiterpene의 방출량은 상대적으로 낮았다.

• Journal of Forest and Environmental Science
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• 제34권2호
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• pp.192-195
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• 2018

To establish a management strategy of sediment-related disasters for adaptation to climate change, it is necessary to 1) understand the specific details and problems about the present status, 2) systematize related technologies by using exact numerical values obtained from physically-based analysis, and 3) ensure the basic guidelines are applied to field elastically. To achieve these successfully, detailed guidelines are required by scientifically considering the utilization and impact of related technology on the field. Here, detailed guidelines should include 1) the development of a basic plan, 2) enhancement of relevant technical instructions, 3) establishment of survey and inspection methods, 4) procedure of erosion control works in urban living sphere, and 5) proactive countermeasures against sediment-related disaster caused by earthquakes.

• Journal of Forest and Environmental Science
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• 제36권4호
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• pp.290-297
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• 2020

This study analyzed and compared the damage rate, natural parasitic rate, and the morphological characteristics of Thecodiplosis japonensis larvae, which inhabit forest areas as control areas to large urban areas in 2018 and 2019. This research was conducted to provide basic data for the management of Thecodiplosis japonensis, which harm pine needles, and the results were as follows. First, the gall formation rate of Thecodiplosis japonensis collected from urban areas was upper-crown 35.59% and 34.25%, mid-crown 25.57% and 27.95%, and lower-crown 25.34% and 26.61%; the gall formation rate of Thecodiplosis japonensis was in the order of upper-crown>mid-crown>lower-crown in 2018 and 2019, respectively. In the control areas, the gall formation rates of Thecodiplosis japonensis in mountain villages in 2018 and 2019 were upper-crown 17.72% and 21.78%, mid-crown 13.85% and 16.97%, and lower-crown 15.12% and 15.79%; thus, in the order of upper-crown>lower-crown>mid-crown. The number of larvae in the galls of needles damaged by Thecodiplosis japonensis was as follows: the average number of larvae in the pine trees of urban areas was 9 and 8 in the upper-crown, 7 and 8 in the mid-crown, and 6 and 7 in the lower-crown respectively. This shows that the number of larvae was fewer in the lower-crown than the upper-crown, and that the number of larvae was higher in 2018 than in 2019. For natural parasitic rate of Thecodiplosis japonensis, the gall formation rate and natural parasitic rate of Thecodiplosis japonensis were surveyed; the natural parasitic rate was 12.5% and 11.8% in urban areas while the rate was 21.7% and 20.9% in mountain villages in respectively in 2018 and 2019.

• Journal of Ecology and Environment
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• 제32권3호
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• pp.207-215
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• 2009

Greenbelts were designated by the Korean government in 1971 in 14 large cities to prevent uncontrolled urban expansion. Recently, deregulation of the greenbelt system has resulted in further development, but the ecological role of greenbelts has not been fully considered when decisions about urban management are being made. We examined the ecological roles of the greenbelt system in the Seoul metropolitan area and prepared sustainable management and improvement plans based on our analysis of landscape characteristics using satellite images covering a ${\sim}30$-year period. The loss of forest cover during this period in the greenbelt areas was lower than that in the areas outside and inside of the greenbelt. Fragmentation of forest cover was correlated with the pattern of loss of forest cover. The NDVI of the greenbelt remained steady at 90% of that in outside of the GB for three decades. This suggests that the greenbelt system has performed its primary roles well. However, the remaining green space was not adequate to provide a sink for air pollutants even when the greenbelt area was included. We discuss how the negative effects of urbanization can be reduced through sustainable management and restoration to promote ecological functioning in greenbelts and urban landscapes.

• 한국지리정보학회지
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• 제4권3호
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• pp.41-50
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• 2001

본 연구에서는 GIS를 이용하여 산불관련 데이터베이스를 구축하고 효과적인 산불 현황정보 검색시스템을 개발하여 산불 관리자에게 효율적인 공간분석 도구를 제공함으로서 산불에 관한 종합적인 공간정보를 빠른 시간 내에 분석하여 속성을 갱신 추출할 수 있도록 하는 효과적인 산불정보관리시스템을 개발하였다. 이를 위하여 최근 10년간의 산불 현황통계자료를 이용한 전국 시 군 단위의 공간분포도를 작성하여 전국 산불 발생현황을 시 공간적으로 분석하고 산불 발생에 미치는 다양한 요인들과의 상관성 분석이 가능하였다. 특히 최근 산불 발생이 빈번한 삼척시의 지형도 및 임상도, 위성영상, 현지사진을 이용하여 GIS 데이터베이스를 구축함으로써 산불 발생위험지역에 대한 보다 상세한 정보를 얻을 수 있다. 본 시스템은 응용프로그램 개발을 위한 플랫폼은 IBM호환 PC에서 Windows 98을 운영체제로 하여 DBMS는 Access 2000을 이용하였고 프로그래밍 언어로는 객체지향언어인 Visual Basic 6.0과 GIS 기능을 구현하기 위해서 Component GIS인 MapObjects 2.0을 사용하였다. 그 결과 산불 관리자는 진화에 필요한 관리구역내의 정보를 신속하게 제공받을 뿐만 아니라 산불 방제사업에 대한 효과적인 의사결정지원과 함께 실무자 중심의 산불관리행정을 도모하고 산림자원 관리비가 효율적으로 이용될 것이다.

• 대한공간정보학회지
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• 제21권4호
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• pp.83-93
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• 2013

토지의 적성평가에 관한 지침에 따라 토지적성평가시 토지의 적성을 비교적 종합적으로 평가할 수 있으나, 기존지침의 평가지표 및 평가방법에 한계가 있다고 판단하였다. 현재 사용되고 있는 기본지표가 지역의 다양한 특성을 제대로 반영하기에는 한계가 있기 때문에 지역 특성을 반영할 수 있는 평가지표 및 평가방법이 필요한다고 보고 있다. 이러한 토지적성평가의 한계를 타개하기 토지적성평가시 새로운 지표로평가지표를 대체하였을 때 변화되는 적성등급까지 분석하는 실증적 연구이다. 이 연구에서는 관리지역 경계부 임야지역이 합리적인 평가가 이루어지는가를 확인하고, 토지의 적성평가에 관한 지침에 따른 관리지역 경계부 임야지역의 합리적인 평가방법을 확인하였다. 토지적성평가에 지역특성을 반영하기 위한 대체지표를 추가 하거나, 좀 더 효과적인 대체지표가 어떤 것인지를 확인하기 보다는 토지의 적성평가에 관한 지침에 따라 토지적성평가를 수행하였을 때, 관리지역 경계부 임야지역의 합리적인 평가방법을 제시하였다.

• 한국환경복원기술학회지
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• 제22권5호
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• pp.1-12
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• 2019

It is important to measure the height of trees as an essential element for assessing the forest health in urban areas. Therefore, an automated method that can measure the height of individual tree as a three-dimensional forest information is needed in an extensive and dense forest. Since airborne LiDAR dataset is easy to analyze the tree height(z-coordinate) of forests, studies on individual tree height measurement could be performed as an assessment forest health. Especially in urban forests, that adversely affected by habitat fragmentation and isolation. So this study was analyzed to measure the height of individual trees for assessing the urban forests health, Furthermore to identify environmental factors that affect forest growth. The survey was conducted in the Mt. Bongseo located in Seobuk-gu. Cheonan-si(Middle Chungcheong Province). We segment the individual trees on coniferous by automatic method using the airborne LiDAR dataset of the two periods (year of 2016 and 2017) and to find out individual tree growth. Segmentation of individual trees was performed by using the watershed algorithm and the local maximum, and the tree growth was determined by the difference of the tree height according to the two periods. After we clarify the relationship between the environmental factors affecting the tree growth. The tree growth of Mt. Bongseo was about 20cm for a year, and it was analyzed to be lower than 23.9cm/year of the growth of the dominant species, Pinus rigida. This may have an adverse effect on the growth of isolated urban forests. It also determined different trees growth according to age, diameter and density class in the stock map, effective soil depth and drainage grade in the soil map. There was a statistically significant positive correlation between the distance to the road and the solar radiation as an environmental factor affecting the tree growth. Since there is less correlation, it is necessary to determine other influencing factors affecting tree growth in urban forests besides anthropogenic influences. This study is the first data for the analysis of segmentation and the growth of the individual tree, and it can be used as a scientific data of the urban forest health assessment and management.

• 농촌계획
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• 제11권4호
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• pp.47-57
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• 2005

The goal of this research is to evaluate landscape-ecological characteristics of watersheds in the Nakdong River Basin by using Geogaphic Information System (GIS) and landscape indices for integation of spatio-temporal informations and multivariate statistical techniques for quantitative analysis of forest landscape. Fragmentation index and change matrix techniques using factor analysis and grid overlay method were used to efficiently analyze and manage huge amount of information for ecological-environmental assessment (land-cover and forest landscape patterns). According to the results based on the pattern analysis of land-cover changes using the change detection matrix between 1980s and 1990s, addition on 750km$^2$ became urbanized areas. The altered 442.04km$^2$ was agricultural areas which is relatively easy for shifting of land-use, and 205.1km$^2$ of forests became urbanized areas, and average elevation and slope of the whole altered areas were 75m and 4$^{\circ}$. On the other hand, 120km$^2$ of urban areas were changed into other areas (i.e., agricultural areas and green space), and fortunately, certain amount of naturalness had been recovered. But still those agricultural areas and fallow areas, which were previously urban areas, had high potential of re-development for urbanization due to their local conditions. According to the structural analysis of forest landscape using the landscape indices, the forest fragmentation of watersheds along the main stream of the Nakdong River was more severe than my other watersheds. Furthermore, the Nakdong-sangju and Nakdong-miryang watersheds had unstable forest structures as well as least amount of forest quantity. Thus, these areas need significant amount of forest through a new forest management policy considering local environmental conditions.