• Plant Resources
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• 제8권3호
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• pp.250-257
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• 2005

This study was performed to provide basic information of the development and breeding of new cultivars of Hibiscus syriacus L., which have more beautiful and diverse flowers. Morphological characteristics of the flowers and leaves, and genetic variation of the flowers color of two Jeoktanshim-line cultivars, Bulsae and Pyungsung, were crossed each other. The result of the cross between Bulsae and Pyungsung are as follows: Mean flower height and width were 5.35 cm and 7.69 cm, respectively. Mean length and width of petal were 5.43 cm and 3.80 cm respectively, and mean length and width of flower pistil were 4.67 cm and 0.44 cm, respectively. The flower color of all ten individuals was the color of the Jeoktanshim-line, and Pyungsung, and all flower type were I-c type.

• 한국환경생태학회지
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• 제29권2호
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• pp.236-249
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• 2015

The master plan of forest land management proposes forest watershed management that considers regional characteristics in order to overcome the problem of uniform forest land management. In order to manage the forest watersheds in Gyeonggi-do, this study classified 1,823 forest watersheds in Gyeonggi-do and attempted to understand their characteristics. It conducted a factor analysis and cluster analysis from the perspective of conservation value and development pressure using forest land indicators. In terms of conservation value, three factors were drawn: the topography factor, vegetation factor and public service factor, while in terms of development pressure, three factors were drawn: the easiness of development factor, economic benefits factor and development activity factor. Using these factors, forest watersheds were divided into three clusters in terms of conservation value while they were divided into three clusters in terms of development pressure. Using the results of the cluster analysis from a conservation-development perspective, the forest watersheds were classified into nine different types, and the characteristics were identified by each type. It is judged that the factors and clusters drawn as a result of the research accurately reflect the present conditions of Gyeonggi-do, and the nine types of forest watersheds have clear characteristics according to each type, which are judged to be utilized in forest management in the future.

• 한국환경복원기술학회지
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• 제9권6호
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• pp.123-132
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• 2006

This research was studied to inverstigate the effect of plant mixtures and tackifibers on the vegetation of slope sites. 5 type plant mixtures(tree type, forest type, native herbaceous plant type, foreign herbaceous plant type, and cool-season turfgrass type) and 3 different tackifibers (Guar tackifibers, Polyarchrylamide tackifibers and Cellulose methyl starch) were treated with 3 replications on the experimented slope. The germination and coverage rate were high on native and foreign herbaceous plants and low on cool-season turfgrass, forest and tree types. We could notice that herbaceous plant types were effective on the vegetation of slope in the short term. Because tree or forest type vegetations similar to natural plant habitat, however, were preferable on slope vegetation in the long term, tree species of high germination rate should be selected in this experiment for tree or forest type slope vegetations. Tackifiber treatments increased the germination rate during the early treatment stage. However, the effect of tackifiber treatment on germination rate was decreased on the elapse of time. Guar tackifiber treatment was most effective on the vegetation of slope. As far as soil erosion control was concerned, all tackifiber treatments were effective compared to control.

• 한국산림과학회지
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• 제105권2호
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• pp.157-166
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• 2016

덕유산 백암봉 일대의 천연림을 대상으로 산림형을 구분하고, 각 산림형별 생태적 특성을 파악하여 천이경향을 제시하였다. 사분각법을 이용하여 225개의 표본점에서 식생자료를 수집하였으며, 다양한 다변량 통계분석(Cluster분석, 지표종분석, 다중판별분석 등)을 실시하여 산림형을 구분하였다. 그 결과, 연구대상지는 5개의 산림형으로 분류되었고, 상층의 우점비율 및 입지환경에 따라 능선부에서는 신갈나무림, 계곡부에서는 들메나무-물푸레나무-층층나무림과 들메나무림, 사면하부에서는 졸참나무-소나무-신갈나무림, 소나무림 등이 분포하여 입지조건에 따라 수종구성 차이가 뚜렷한 것으로 나타났다. 산림유형별 생태적, 환경적 특성을 근거로 천이경향을 추정한 결과, 현재의 산림형은 신갈나무림, 들메나무림, 중생혼합림, 참나무-서어나무림 등으로 천이가 진행될 것으로 예상되었다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.467-469
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• 2003

This research aimed to develop forest type classification technique for the mixed forest with coniferous and broad-leaved species using the high resolution satellite data. QuickBird data was used as satellite data. The method of this research was to extract satellite data for every single tree crown using image segmentation technique, then to evaluate the accuracy of classification by changing grouping criteria such as tree species, families, coniferous or broad-leaved species, and timber prices. As a result, the classification of tree species and families level was inaccurate, on the other hand, coniferous or broad-leaved species and timber price level was high accurate.

• Spatial Information Research
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• 제22권5호
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• pp.53-63
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• 2014

최근 생태자원에 대한 관심이 증가함에 따라, 자연환경의 복원과 보존이나 경관성 평가 등을 위해 생태자원을 3차원으로 시각화하려는 노력이 늘어나고 있다. 그러나 산림자원의 경우 정보의 추출은 활발하지만 그 정보를 활용하여 효과적으로 시각화 하려는 노력은 일어나지 않고 있다. 즉 산림자원의 시각화에 있어 현실적이지 못하거나 각종 분석에서 요구하는 시뮬레이션이 부적합한 경우가 다수이며 이를 효과적으로 시각화하려는 노력은 부족하였다. 따라서 본 논문에서는 항공 LiDAR 데이터와 항공사진, 임상도(Forest Type Map)를 통해 산림정보를 추출하여 Vegetation Layer를 생성한 후 Flora3D 수목모델링 툴과 ArcGlobe를 이용하여 Vegetation Layer를 3차원으로 정밀하게 시각화하였다. 지리정보시스템 내에서 사용자가 산림정보를 직관적이고 현실적으로 인식할 수 있도록 함으로써 생태자원의 복원과 보존, 도시경관 등을 위한 분석에 효율적으로 활용할 수 있을 것으로 판단된다.

• 농촌계획
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• 제21권2호
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• pp.51-61
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• 2015

The necessity of universal design for forestry is increasing. Although several studies applied universal design in forest site, they had been only concentrated on the barrier-free design for the limited activities rather than overall utilization for considering all visitors from the disabled, the elderly and the infirm to the baby and child. The purpose of this study is to find out the principle of the universal design within forest welfare service facilities by analysing how socially disadvantaged people perceive overall usage of natural recreation forest area. This study figures out the main principles of universal design in forest welfare through analyzing usage of children and disabilities in Yumyeongsan natural recreation forest where is one of the popular type of forest welfare area. By doing focus interviews targeted on children and disabilities, the results are analyzed through semantic network analysis, objectively. The result proves that universal design in forest welfare area contains four principles; convenience, safety, diversity and amenity. Also it confirmed that disabilities need better internal space facilities and priority care. Through those characters of universal design, forest area will be able to cover more various type of users as forest welfare area.

• Journal of the Korean Wood Science and Technology
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• 제47권4호
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• pp.486-497
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• 2019

The non-isothermal and isothermal pyrolysis properties of H lignin and P lignin extracted from different biorefinery processes (such as supercritical water hydrolysis and fast pyrolysis) were studied using thermogravimetry analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS). The lignins were characterized by ultimate/proximate analysis, FT-IR and GPC. Based on the thermogravimetry (TG) and derivative thermogravimetry (DTG) curves, the thermal decomposition stages were obtained and the pyrolysis products were analyzed at each thermal decomposition stage of non-isothermal pyrolysis. The isothermal pyrolysis of lignins was also carried out at 400, 500, and $600^{\circ}C$ to investigate the pyrolysis product distribution at each temperature. In non-isothermal pyrolysis, P lignin recovered from a fast pyrolysis process started to decompose and produced pyrolysis products at a lower temperature than H lignin recovered from a supercritical water hydrolysis process. In isothermal pyrolysis, guaiacyl and syringyl type were the major pyrolysis products at every temperature, while the amounts of p-hydroxyphenyl type and aromatic hydrocarbons increased with the pyrolysis temperature.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.358-360
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• 2008

Recently there are many pilot studies for advanced application of first Korea national high resolution satellite image, which is called as KOMPSAT-MSC (Korean Multi-purpose Satellite-Multi-Spectral Camera), in Korea. In this study the forest type classification methodology is developed and its distribution map was constructed by applying high resolution satellite image, KOMPSAT-MSC, based on Tasseled Cap Transformation, especially through comparing the result of detailed filed surveying such as forest type, tree species, tree diameter, tree age and tree crown density in pilot study area.

• 한국환경생태학회지
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• 제26권4호
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• pp.604-619
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• 2012

독일의 산림미학(숲미학)과 영국의 산림디자인 개념에 따르면 우리나라 국립공원 인공림도 단계별로 생태적 복원이 필요하며, 본 연구는 국립공원 인공림의 식생구조를 분석하여 생태적 천이를 유도하기 위한 식생유형별 간벌 밀도 기준을 제시하고자 수행하였다. 국립공원 중 치악산, 속리산, 덕유산, 내장산에 분포하는 잣나무림, 전나무림, 편백림, 은사시나무림, 일본잎갈나무림 등 인공림 8개소와 소나무군집, 소나무-졸참나무군집, 졸참나무군집 등 자연림 3개소 등 총 11개소에 $20m{\times}20m(400m^2)$ 크기의 방형구를 설정하였다. 식생구조 특성을 고려하여 인공림을 천이미발달형, 외래종치수발달형, 천이초기형으로 유형화하였다. 종다양도(H')는 천이미발달형 0.9681~1.1323, 외래종치수발달형 1.0192~1.1870, 천이초기형 1.3071~1.3892, 자연림 1.2202~1.3428로 침엽수 단일수종 위주의 단층구조의 인공림보다 천이초기형 인공림과 다층구조의 자연림의 종다양도가 다소 높았다. 단계별 간벌 밀도는 30~60% 범위로 하되, 천이미발달형은 외래종 우점치가 88~90%로 높으므로 대경목부터 3단계에 걸쳐 간벌하고, 외래종치수발달형은 외래종 우점치가 60~97%로 높고 아교목층과 관목층에 치수가 발달하고 있어 조기에 외래종 치수를 제거하고 1단계 또는 2단계에 걸쳐 간벌하며, 천이초기형은 외래종 우점도가 30% 이하로 자생종과 경쟁하는 외래종을 우선적으로 간벌하고 1단계 또는 2단계에 걸쳐 간벌할 것을 제시하였다.