조선시대 기후변화와 환경개선사업 관계 -조선왕조실록의 가뭄관련 기록을 중심으로-

유재심 ( Jae Shim Yu ),성종상 ( Jong Sang Sung ) 한국전통조경학회(구 한국정원학회) 2011 한국전통조경학회지 Vol.29 No.3

"가뭄으로 인한 기후변화가 인지되고 기후 재난을 겪게 되었을 때 조선시대의 사람들은 환경적으로 어떻게 적응하는 행동을 했을까?"라는 의구심을 가지고 연구를 진행하였다. 연구 진행을 위해 ``환경개선사업은 기우제 설행 빈도보다는 기후재난 빈도가 높을 때 더 많이 시행된다.``는 가설을 세웠다. 조선왕조실록에서 가뭄을 대표하는 변수로 기우제 빈도를 선택하였다. 기후재난과 환경개선사업을 표현하는 단어들의 샘플을 추출하고 빈도를 측정하여 가뭄, 기후재난, 환경개선사업의 관계를 회귀분석하였고, 연구 가설을 검정하여 기후재난과 환경개선사업 관계를 기후변화 속에서 설명하였다. 가뭄을 대표하는 기우제의 빈도 측면에서 세종대왕, 숙종, 영조의 순서로 나타냈다. 기후 재난은 중종, 성종, 그리고 태종의 순서로 빈도를 보였고, 환경개선 사업은 영조, 성종, 그리고 태종의 순서로 나타났다. 조선 전기보다는 조선 후기로 갈수록 가뭄 발생으로 인한 환경개선사업보다 기후재난에 대한 환경개선사업 비율이 더 높게 나타났다. 환경개선사업과 기후재난의 관계는 환경개선사업= 0.632기후재난의 선형 회귀모형으로 설명되었다. 기후재난을 경험한 비율이 높을 때 기후변화에 적응하기 위한 환경개선 사업이 더 많이 시행한다는 연구가설은 유의했다. 따라서 기후 재난을 인식하고, 환경개선사업을 시행한 비율이 높았던 조선 후기에 연구가설이 통계적으로 더 잘 설명되었다. What kinds of environmental adaptation did people during the Chosun era take when climate change due to drought was perceived and natural disasters occurred? Research hypotheses is ``More environmental improvement projects were conducted when climate disasters were experienced than rituals for rain calling.`` In this study, frequency samples for Rituals for Rain (RR, 祈雨祭) defined as abnormal climate of drought, Climate Disaster(CD) and Environmental Improvement Projects(EIP) were extracted from 「Chosunwangjoshillok(朝鮮王朝實錄)」. The analysis among RR, CD, and EIP were studied for regression model. Research hypothesis was statistically tested. RR took placed the order of Sejong(世宗), Sukjong(奭宗) and Youngjo(英祖), while climate disasters were extracted under the Jungjong(中宗), Sungjong(成宗) and Taijong(太宗). EIP were most active under Youngjo(英祖), Sungjong(成宗) and Taijong(太宗). During the former part of the Chosun dynasty, abnormal climate was more seriously considered than climate disasters, while the opposite pattern was shown during the latter part In a regression analysis between EIP and CD, the equation of EIP = 0.632CD was determined. As a test result, the study hypothesis the entire Chosun dynasty was dismissed. However, it is possible to statistically support that more EIP were conducted in order to adapt to the climate change during the latter part of the dynasty when climate disaster were experienced.

북한 산림경관복원 적용을 위한 한반도 생태지역 특성

유재심 ( Jae Shim Yu ),김경민 ( Kyoung Min Kim ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2015 한국환경복원기술학회지 Vol.18 No.6

The objectives of this study are to construct an ecoregion map and to extract ecological factors from each ecoregion to adapt FLR (Forest Landscape Restoration) of North Korea. An ecological map was constructed by PCA(Principal Component Analysis) and MGC(Multivatiate Geographical Clustering). An ANOVA test verified the differences among ecoregions, and post-hoc pair wise comparisons were performed to determine similarities between them. Factor analysis was conducted to extract ecoregional characteristics. Ecoregions were distributed into clusters reflecting differences of south and north and of east and west of their ecological factors. About 12% of land area in North Korea shared similar ecological factors with South Korea, but the remaining 88% was found to be ecologically different. The ANOVA test showed a p-value of 0.000, indicating significant differences between the regions. Post-hoc pair wise comparisons indicated statistically significant similarities in annual mean temperature between ecoregion D and G, precipitation seasonality between ecoregion H and O, and precipitation of the warmest quarter between ecoregion K and O. Because ecoregion A and N showed same in their soil water contents, they were assumed that the dense of forest cover in the Southern ecoregion A is similar to that in the Northern ecoregion N of Korean peninsular. Based on the results of this study, it is necessary to accommodate quantitative and spatial based planning, when South Korea aids forest restoration projects in North Korea. In addition, it is recommended for both South and North Korea to share on Forest Landscape Restoration methodologies with each other.

북한 산림의 시,공간 변화와 황폐화 추동

유재심 ( Jae Shim Yu ),김경민 ( Kyoung Min Kim ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2015 한국환경복원기술학회지 Vol.18 No.6

The objective of this study is to establish implications for forest restoration planning in North Korea by analyzing spatio-temporal forest changes and detecting bio-physical factors driving forest degraded. We measured the relationship and spatial distribution between shifting cultivation and sparse forest. We also analyzed between degraded forest land and ecological variables by binary logistic regression to find biophysical drivers of forest degradation and deforestation in North Korea. Between the sparse forest and the shifting cultivation, a positive relationship is found (r=0.91) and scattered discontinuously throughout the country (Moran’s I = -1, Z score = -13.46 (p=0.000)). The sparse forest showed a negative relationship with the warmest month(bio 9), the coldest month(bio10), and the minimum of soil water contents (swc_min), while the shifting cultivation had a negative relationship with the warmest month(bio 9) and the minimum of soil water contents(swc_min). However, the most critical drivers convert forests into sloping farmland were the three months rainfall in summer(bio8) and the yearly mean of soil water contents. Such results reflect the growth period of crops which overlaps with the rainy season in North Korea and the recent land reclamation of uplands where the soil water contents are maintained with a dense forest. When South Korea aids forest restoration projects in North Korea, in consideration of food shortage due to North Korea’s cropland deficiency, terrace farmlands where soil water contents can be maintained should be excluded from the priority restoration area. In addition, an evaluation method for selecting a potential restoration area must be modified and applied based on multiple criteria including altitude and socio-economic factors in the respective regions.

지리산 반달가슴곰 상사리 입지와 조망 특성

유재심 ( Jae Shim Yu ),박종화 ( Chong Hwa Park ),우동걸 ( Dong Gul Woo ) 한국환경복원기술학회 2012 한국환경복원기술학회지 Vol.15 No.4

The objective of this study is to investigate the characteristics of the location and prospects of the bear shelves built by Asiatic black bears in the Jirisan National Park. Previous researchers have been analyzed bear shelves in terms of places for resting and eating, but we are going to analyze based on the prospect-and-refuge theory. Characteristics of the sites of bear shelves are measured through field survey and topographic analysis by using digital elevation model (DEM). The normalized difference vegetation index (NDVI) is used to evaluate the optimum location of bear shelves in terms of crown density. Man-made objects are identified by viewshed analysis based on geographical information system (GIS). Findings of this paper can be summarized as follows. First, most bear trees are located deep inside of the mountainous national park, slopes of 30~40 degrees, altitude of 400~1,200m, and relatively low vegetation density with NDVI value of 0.4~0.6 compared to the average NDVI of the park. Second, the average height of bear shelves is 12.44m, or 74% of the average height of bear trees.They are located at suitable places to observe nearby trails and other park facilities. Third, man-made objects within the 100m radius of bear trees include lodge, bear training center, beekeeping camp, and hiking trails. Thus we may temporarily conclude that one of the main criteria of the bear tree selection in the park has been to identify optimum places for the monitoring of human activities in their habitat.

학술 연구 논의에서 발생하는 귀화식물의 부정적 인식과 문화적 배제

유재심 ( Jae Shim Yu ) 한국환경복원기술학회 2013 한국환경복원기술학회지 Vol.16 No.2

This study suggests that some of the negative arguments related to naturalized plants raised in academic discussions are unreasonable through an analysis of trends in the academia`s research on naturalized plants in South Korea. A total of 117 academic papers related to “naturalized plants” on the Korean Studies Information Service System (KISS) website were re-classified by space, the number of vascular plant species, the number of naturalized plant species, naturalization index (NI), and urbanization index (UI). Correlation between human interference and naturalized plant distribution, and between sizes of conservation areas and naturalized plant distribution were analyzed. According to the results, while there was a tendency between urban population and UI (r2 = 0.70, p = .000), the number of visitors in national parks had no relation to either the NI or the UI (r = 0.028 and r = 0.0 13, respectively). Likewise, there was no correlation between national parks or conservation areas and naturalized plant distribution (r = 0.0 14, r 0.17, respectively). The average NI and the UI of forest areas were approximately twice as low as those of national parks. In estimated regression equation, when one hypothesizes that the entire 4,952taxa of plants growing in South Korea, the number of naturalized plants, combining paleo-naturalized plants and neo-naturalized plants, amounted to 2,398taxa, 48.43%. In the academia, Korean Endemic Plants are less than one quarter of 4,952taxa. Such results signify that, contrary to discussions in the academia, it is meaningless to distinguish between naturalized plants and native plants. In certain aspects, academic discussions on naturalized plants in Korea have proceeded in a manner similar to cultural exclusion by mono-culturalism in a multi-cultural environment.