• 자원환경지질
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• 제24권3호
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• pp.245-260
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• 1991

Surficial dispersion patterns of heavy metals and toxic elements (U, Mo, Cu, Zn, Fe, Mn, Co, Cr, V, Ni, Pb, and Cd) were investigated in the Dukpyungri, Goesan area covered with low grade uranium-bearing black shales. Maximum abundance of U in the black shale was 455ppm. Radioactivity was counted at a maximum of 7cps in black shales, and was less than 0.5cps in shales, slates, and oil shales of the control areas. Enrichment of Mo, V, Cu, Zn, Cd, and Pb in black shales is particularly characteristic compared with shales, slates, and oil shales of the control areas, whereas contents of Mn, Cr, Co, and Th in all rock samples tend to be almost similar. Residual top soils (0~15cm depth) over black shales show high contents of Mo, Cu, Zn, Ni, Cd, and V in comparison with the control areas. Contents of trace elements in subsoils (15~30cm depth) were higher about one and half times than those in topsoils. Average contents of Mo, Cu, Pb, Zn, Cd and V in garden soil and playground soil of an elementary school in Dukpyungri, Goesan area, were high about two to fifteen times compared with the control areas. Contents of trace elements in stream sediments were higher from two to eight times than those in residual soils. Sodium, AI, K, V, Cr, and Fe were more enriched in the roots of pine than in the twigs of pine. Contents of Li, AI, V, Ni, Cd, Fe, and Co were higher in the roots of azalea than in the twigs of azalea. Enrichment of P, Ca, and Mg was remarkable in the twigs of both pine and azalea. Biological absorption coefficients for essential elements (Zn, P, Mn, Ca and K)tend to be high, whereas those for the non-essential elements.(Ba, Ti, V, and Mo) and toxic elements(Cr, Co, Pb and Ni) be low. Less mobile elements (Pd, Cd, and Co) tend to show anomalies with higher contrast than more mobile elements(Mo, V, Zn, Cu and Ni) in the area covered with black shales.

• 한국환경과학회지
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• 제20권10호
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• pp.1319-1328
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• 2011

Rhododendron brachycarpum is a evergreen broad-leaved shrub and belongs to the Ericaceae family and the Rhododendron genus. It is well known for its beautiful leaves and flowers. There are 11 species of the Rhododendron genus in Korea. It includes 3 species - Rhododendron brachycarpum, Rhododendron aureum Georgi and Rhododendron brachycarpum var. roseum Koidz. They grow naturally over 1,000 meters above sea level of the Baekdu Mountain Range in Korea. These habitats, according to investigations of 9 Rhododendron brachycarpum natural habitats, are mostly located on the slope of mountains facing north at an altitude of 1,200 m to 1,526 m above sea level with angle of inclination from 30 degrees to 45 degrees. Based on the result of vegetation analysis of dominance species in the quadrates, there are Quercus aliena, Quercus mongolica Fisch. ex Ledeb, Abies holophylla in species of upper trees, and so on. Dominant species of woody plants in tree layer are Quercus aliena, Quercus mongolica Fisch. ex Ledeb, Abies holophylla, Betula platyphylla and Veeatrum patulum Loes. fil, Erythronium japonicum, Dryopteris crassirhizoma, Paeonia japonica var. glabra Makino are founded in herbaceous plants. And we can see another result of the investigation that the flowering rates of the plants with the buds are highly ranked mountains such as Mt. Hambaek 68%, Mt. Gyebang 40%, Mt. Yagksu 9%, Mt. Gaein 7% and Mt. Seolag 0%. The results show that there are 24 over 15-year-old Rhododendron brachycarpums in Mt. Odae and are 56 under 15-year-old trees in Mt. Hambaek and are no trees in Mt. Gyebang and are 9 over 30-year-dead trees only in Mt. Taebaeg. Out of found trees, the highest tree is 7 m in height and 0.6 m in diameter. Also this result shows what are the vulnerability factors of the natural habitats. They are as follows: indiscriminate trails in mountains, damages by mountain climbers, uncareful plant collecting, the fierce competitions with other plants such as Acer pseudosieboldianum var. ishidoyanum Uyeki, Quercus aliena, Celastrus orbiculatus and damages by disease and insect, unusual temperature in natural habitats, etc. Rhododendron brachycarpums have high ornamental value and excellent pharmaceutical effect. But the areas of its habitats decrease dramatically. So we need measures to protect and their natural habitats. It is necessary that we conductfurther investigations to designate conservation area for Rhododendron brachycarpums.

• 한국전통조경학회지
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• 제38권2호
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• pp.1-13
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• 2020

본 연구는 북경팔경과 관련된 시문과 서화를 비롯하여 고지도·고문헌 등을 분석하여 북경팔경의 시대별 변천과정과 경관인식 변화, 북경팔경의 물리적 경관요소 및 구조분석과 국가경영과의 관계, 마지막으로 북경팔경의 장소화과정을 고찰하였다. 북경팔경의 경점은 도성 밖과 안으로 각각 네 곳씩 분포하고 있으며, 도성 밖은 모두 황제의 휴식처이자 북경의 산수경관의 중심인 서산 지역에 집중되었고, 도성 안의 경점은 궁궐의 황제원림에 두 곳, 성곽 주변의 마을 두 곳에 분포하고 있다. 즉 북경팔경은 초기 조성될 때부터 황실, 황제, 황궁과 밀접하게 관련된 장소로 선정하였으며, 금 이후 원·명·청대를 거치면서 황제를 비롯한 수많은 학자들이 국가경영에 활용함으로써 점점 도성팔경으로서 성격이 짙어졌다. 도성 내 두 곳은 신선과 황제를 동격화하여 칭송하였으며, 도성 밖 두 곳은 도성주변의 마을 경관의 모습을 담고 있으면서 통치를 받는 백성들의 편안한 삶을 묘사하고 있다. 결국 팔경의 대부분 조망지역은 황궁과 황제와 관련이 있음을 알 수 있다. 북경팔경의 물리적 경관을 요소별로 살펴보면, 수도방비·인재선발·농사에 대한 내용을 담은 국가경영과 황제 칭송, 북경 민가의 모습을 담고 있다. 건륭제는 중국의 팔경(경관) 문화를 소상팔경(북송)→서호팔경(남송원말)→연경팔경(금대)→북경팔경(명대)→건륭제의 연산팔경(청대)으로 역사적 맥락을 계승하려고 하였을 뿐만 아니라 비석과 원림 조성을 통해 북경팔경의 장소화하는 과정을 확인하였다.