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우도비를 적용한 경상북도 산불 발화지의 공간분포 특성 연구
윤혜연 ( Hye-yeon Yoon ),장동호 ( Dong-ho Jang ) 한국지리학회 2021 한국지리학회지 Vol.10 No.1
This study analyzed the spatial distribution characteristics of forest fire ignition point by applying likelihood ratio. Analysis of the obtained results, a high correlation with the forest fire ignition point was found in elevation, slope, aspect, geologic, landcover, forest type, topographic wetness index, effective soil depth, average temperature, and average highest temperature, excluding soil drainage. Moreover, the result that driven in the spatial distribution characteristics of the Gyeongbuk forest fire ignition point, most of the point have distributed an elevation of 0~200 m (48.4%), a slope of 10~20° (42.3%), and the aspect is located at South direction (22.8%). In addition, 34.6% of the geologic area of the forest fire ignition point corresponds to granite, and the land-cover was mostly distributed in the forest area (88.4%). In the case of forest type, maximum 30.6% were found to be in the mixed forest of soft and hardwood, and the topographic wetness index was found to be in the range of 2.3~5.5 (58.5%). In addition, forest fire ignition points were found to be widely distributed at the section of 50~100 cm (49.5%) in the effective soil depth, 11.9~12.6°C (24.0%) and 24.8~25.5°C (30.1%) at the average temperature and average highest temperature respectively. The results derived from this study can be used as basic data for forest fire management policies and practices.
웹 데이터베이스와 지형 자료를 활용한 경상도 상부소리의 공간분포 특성 분석
윤혜연 ( Yoon Hye-yeon ),장동호 ( Jang Dong-ho ) 한국지형학회 2024 한국지형학회지 Vol.31 No.2
In this study, we analyzed the characteristics of spatial distribution and diffusion of ‘Dalgu ryu’, ‘Dumadi numcha ryu’, and ‘Oleu-mag unsang’ in Gyeongsang-do using web database and geomorphic data. The results showed that ‘Dalgu ryu’ is distributed in the western Sobaek Mountains and the lowlands of the central Nakdong River, while ‘Dumadi numcha ryu’ is distributed in the Nakdong River basin in the western Sobaek Mountains, the lowlands of the east coast, and the lower Nakdong River area. ‘Oleu-mag unsang’ was distributed mainly in the Sobaeksan Mountain area and the lower Nakdong River, and the kernel analysis showed a high spatial density in the order of ‘Oleu-mag unsang’, ‘Dalgu ryu’, and ‘Dumadi numcha ryu’. The results of the analysis using the geomorphic data showed that the distribution of the songs was mainly centered on areas around the water system network and areas with a low density of lineaments, which reflected the individual characteristics of the songs and the local funeral culture. The results confirmed that it would be used as a resource for understanding local funeral culture when more spatial database of funeral songs was built.
무인항공기를 활용한 금강 하도내의 퇴적지형 변화 특성 연구: 공주보 개방 전·후를 중심으로
윤혜연 ( Yoon Hye-yeon ),윤광성 ( Yun Kwang-sung ),장동호 ( Jang Dong-ho ) 한국지형학회 2021 한국지형학회지 Vol.28 No.4
In this study is aerial photos and UAV(Unmanned Aerial Vehicle) images were used to analyzed the characteristics of depositional landform changes in the Geum river channels before and after the opening gate of Gongju weir. Based on the depositional landform classification result, the main stream and the bare land occupied most of the area in all periods, and also found that the main stream, mid-channel island, and sand bar occupied a greater degree of area increase or decrease compared to other landforms in the classification items. As a result of analyzing the characteristics of depositional landform changes before and after the opening gate of Gongju weir, it is judged that the depositional landforms have changed due to the decreased water level of the Geum river after the opening of the weir, the summer rainy season and typhoons, river stabilization after the effluence of Daecheong dam, supply and deposition of river sediments and fixation of vegetation. The results derived from this study can be used as basic data for the study of river depositional landforms and the establishment of management and conservation plans for the landforms in river channels.
지형요소를 활용한 전라도 논매기소리의 공간분포와 전파에 관한 연구: 아리시고나 류, 산아지 곡, 방게 류를 사례로
윤혜연 ( Yoon Hye-yeon ),장동호 ( Jang Dong-ho ) 한국지형학회 2021 한국지형학회지 Vol.28 No.2
In this study, the effect on the spatial distribution and diffusion of Arishigona, Sanaji and Banggae appearing in Jeolla-do was analyzed using geomorphic elements. Based on result, the AriShigona is distributed in the western plains of the Yeongsan River basin and around from the Noryeong mountain range to Mudeung mountain range, the Sanaji is mainly diffused in the middle and upper parts of the Seomjin River and the lower parts of the Mangyeong River, Dongjin River and the Boseong River basin, and the Bang-gae is found to be distributed in the Seomjin River and the upper part of the Yeongsan River basin. Although the cultural centers of these Rice-paddy Weeding Songs are different but they appear to have a similar distribution pattern in Jeolla-do. This is used as a diffusion path of cultural elements by crossing lineaments in various directions and serving bridge role at the same time. However, in the region where the lineaments do not intersect, the continuity of Rice-paddy Weeding Songs are relatively low, which are considered to be reflected in the spatial distribution and propagation of the sound due to the influence of the drain network rather than the lineament. The results of this study can provide basic data for spatial distribution of Rice-paddy Weeding Songs, and regionality and cultural division by diffusion characteristics.
공간통계기법을 이용한 산불 발화지점의 공간분포 및 위험지역 추정 연구
윤혜연 ( Hye-yeon Yoon ),장동호 ( Dong-ho Jang ) 한국사진지리학회 2021 한국사진지리학회지 Vol.31 No.1
In this study, regions with high risk of forest fire were estimated through the analysis of spatial distribution patterns of forest fire ignition points and correlations between regions using GIS spatial statistical method. Bases on result, Nearest Neighbor Index showed a statistically significant clustered pattern to spatial distribution pattern of the ignition points of forest fires and cause of ignition 2(Incineration of fields, Incineration of waste). In kernel density analysis, it was found that the spatial density was high in the boundary of Yeongju-si, Andong-si, and Bonghwa-gun. In addition, in the hot spot analysis, Bonghwa-gun, Yeongju-si, Uljin-gun, Andong-si, Mungyeong-si, Yeongyang-gun, Pohang-si Buk-gu, and Gyeongju-si were identified as hot spot areas. The Global Moran’s I analysis confirmed that there is a statistically significant spatial autocorrelation between the number of forest fire occurrences and the ignition cause 3(Play with fire of child, Architecture fire, Etc). Moreover, in the local Moran’s I analysis, the HH regions were Yeongyang-gun, Yeongju-si, Andong-si, and Bonghwa-gun, and these regions could be include a high probability of forest fire occurrence in the future. Based on the analysis results, the regions with high risk of re-occurrence of forest fires in the future are determined to be Yeongju-si, Andong-si, Bonghwa-gun, and Yeongyang-gun. The results derived through this study can be used as basic data that can contribute to forest fire management and establishment of preventive measures.
GIS 기반 우도비를 활용한 오름의 형태별 공간분포 특성 연구 -제주도 중산간지역을 대상으로-
윤혜연 ( Hye-yeon Yoon ),장동호 ( Dong-ho Jang ) 한국사진지리학회 2020 한국사진지리학회지 Vol.30 No.3
This study analyzed the spatial distribution characteristics in the types of Oreum(Horse-shoses Type, Conical Shape, Ring Shape, Complex Type), located at the mid-mountain area of Jeju Island by using GIS-based likelihood ratio. The result of the analysis, high correlation was found in all thematic maps such as DEM(Digital Elevation Model), slope, soil drainage, forest type, land cover, and TWI(Topographic Wetness Index). Based on frequency ratio result, most of the Oreum of Horse-shoses Type, Conical Shape, Ring Shape, Complex Type are distributed in elevation of 350~400m(18.6%), 250~300m(42.6%), 300~350m(28.4%), 450~500m(23.4%). In addition, the slope distribution was contained for each type of 50.8%, 43.5%, 48.9%, and 43.1% at the angle of 20~30°. Furthermore, the soil drainage, highest frequency was found at well drained class and counted at 68.4%, 84.4%, 83.3%, 51.3% respectively. In terms of forest type, Horse-shoses Type, Conical Shape Oreum highest ratio were found in coniferous plantation at 30.0%, 45.2%, and Ring Shape, Complex Type Oreum highest ratio 26.9%, 31.1% were found in Broad-leaved forest. Also, Moreover, the land-cover was distributed of forest areas at 85.8%, 78.2%, 72.7%, 72.9%, as well as section 0.4∼5.9 of TWI was shown at 88.1%, 91.1%, 80.0%, 82.3% respectively. The likelihood ratio results to be calculated and would be used as basic data for analyzing the spatial distribution characteristics in the types Oreum using a GIS spatial integration model.