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오수생물학적지표생물에 (汚水生物學的指標生物) 의한 청계천의 (淸溪川) 오염도에 관한 연구
이학동 ( Hack Dong Lee ) 한국하천호수학회 1976 생태와 환경 Vol.9 No.1·2
1. The pollution of Chunggae stream from April to September, 1973 was graded through saprobien system. 2. The 37 indicated species collected from the surveyed area were as follows: bacteria (3), schizophyceae (5), flagellatae (5), diatoms (6), chlorophyceae (2), conjugatae (2), rhizopoda (1), ciliata (5), nemertini (1), rotifera (4), crustacea (2), and insecta (1). 3. Pollution grade of the surveyed stations: station 1, α-ms zone, stations 2 and 5, β-ps zone, and stations 3 and 4, α-ps zone. 4. All the stations were ps zones except station 1. Thus it may be concluded that the inflow of the Chunggae stream in one of the most important factors of the polluted Han River.
한강수의 오염도에 따른 오수생물학적 (汚水生物學的) 연구
이학동 ( Hack Dong Lee ) 한국하천호수학회 1977 생태와 환경 Vol.10 No.1·2
1. The pollution grade of the Han River and Keum-Gang areas was investigated through saprobien system from April to October, 1973. 2. The 53 indicated species collected from the surveyed area were a follows: bacteria(3), schizophyceae(8), flagellatae(4), diatoms(10), cholroghyceae(6), conjugatae(4), rhizopoda(3), ciliata(5), nemertini(1), rotifera(6) and crustacea (3). 3. The pollution grade of Chungpyeong, Dooksum, and the 1st Han River bridge was oligosaprobic, α-mesosaprobic, and β-polysaprobic respectively. It is considered that the increase of pollution grade of the 1st Han River bridge was caused by the inflow of polluted water from Chunggye stream. 4. The pollution grade of Yeomchang area was indicated as β-polysaprobic and Kimpo area as α-mesosaprobic. 5. The pollution grade of three surveyed areas of Keum-Gang were β-mesosabrobic, which resembled that of Paldang.
무심천에 (無心川) 있어서 조류의 (藻類) 다양성에 의한 오염도 연구
이학동 ( Hack Dong Lee ) 한국하천호수학회 1980 생태와 환경 Vol.13 No.1·2
This study has been carried out to estimate for the water pollution of Moosim stream by the value of diversity of algaes and to know the effect of Moosim stream on the water quality of Miho stream. 1. This study has been carried out in Moosim stream from May to October and in Miho stream from August to October 1979. 2. Algaes collected from the surveyed areas are as follows: 2 species of schizophyceae, 3 species of flageatae, 11 species of diatoms, 2 species of chlorophyceae and 1 species of conjugatae. 3. In Moosim stream, the surveyed areas are divided into two parts by saprobien system according to the diversity indices. The site I belongs to β-mesosaprobic but the other parts belong to α-mesosaprobic, the values of which are near to those of ploysaprobic. 4. Water quality of Miho stream is polluted slightly by the inflow of polluted water from Moosim stream.
풍수지리에서 본 고구려의 수도 안학궁성(安鶴宮城)과 장안성(長安城)의 도시계획 비교·분석
이학동(Lee, Hak-Dong) 한국주거환경학회 2014 주거환경(한국주거환경학회논문집) Vol.12 No.4
This paper analyzes and compares the city plans of the last two capitals - Anhwakgoong and Jangan castle towns of Goguryeo in Pyongyang, based on feng shui, topography of geomantic principles. In doing so, various historical documents and archaeological data were reviewed and analyzed. Findings and results of this study are summarized as follows: During the 4th, 5th and 6th centuries, China and surrounding counturies were frequently and fiercely fighting war against each other, interacting with each other and syncretizing,. Through this process, they were constructing and reconstructing their international relationship, making and forming a new Asian world order system. In the process of the construction of the new Asian world order, Goguryeo was playing a very significant and powerful role continuously in the Northeast Asia. In the early year of the 5th century, Jangsoo King of the rich and powerful country of Goguryeo moved the capital to Anhwakgoong castle town in Pyongyang, the capital of North Korea from Gooknae castle town in Jilin Province of China, for his territorial expansion to the south direction. He searched a propitious region for the new capital in accord with geomantic principes and finally choosed the area of Anhwakgoong in the east Pyoungyang. He constructed the capital with a city plan coinciding with feng shui. For about one and half centuries after the movement of the capital, Goguryeo gained and enjoyed prosperity. In the 6th and 7th centuries, the royal authority of Goguryeo was weakend and a coalition government by nobles was emerged. In the end of 6th century, the coalition government moved the capital from Anhwakgoong to Jangan castle area in the middle of Pyoungyang. However, this analysis based on geomancy tells us that it should seem for the government to pay little attention to feng shui in location of the capital as well as in the city plan. It would seem that the city plan of the last capital out of accord with feng shui was one of the main reasions for Goguryeo to fall to ruin. Feng shui significantly affecting cities" ups and downs, it can be concluded that city planners should consider and reflect feng shui in their city plannig.
북경성·자금성(紫禁城)의 형성원리 : 역사·지리·경제·정치의 통시적 관점에서 고찰
이학동(Lee Hak-Dong) 한국주거환경학회 2011 주거환경(한국주거환경학회논문집) Vol.9 No.2
Peking Castle has lasted for more than 1,000 years as the capital of multi-ethnic empires in China. This study attempts to examine the principles of formation for Peking Castle and backgrounds of thoughts behind it, and also to understand the historical backgrounds for the construction of Peking Castle under which the spatial configurations of Pecking Castle and Imperial Palace are elaborated across different times and histories in China. The results of the study can be summarized as follows. First, Peking Castle had persisted as the spatial height of the old Chinese empires and has nowadays become a global city. Second, Peking Castle and Imperial Palace have the spatial configurations of symbolizing the reign of Chinese emperors and of imitating purple forbidden enclosure, leading to the spatial arrangements along the central axis. Finally, Peking Castle and Imperial Palace materialize the ceremony of sacrificing Heaven by which the Chinese emperors could express their governing powers at home or abroad.