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남택호,·오충현 동국대학교 자연과학 연구원 2008 자연과학연구 논문집 Vol.9 No.-
Guro is a district of South-West Seoul. Korea. It has been to a center of improvement for South-West Seoul. And so the damage of forest progresses gradually in Guro. This research had been exacuted to find out an management plan to preservation of urban forest as looking changes of the type of forest biotope for 10 years. In the result of this research, the ares of forest biotope type was reduced 8.6 ha. But urban district biotope type and cultivated land biotope type increased 14.1 ha and 11.0 ha. In this result. we found out many factor to be caused by forest Bio-tope. The urban district biotopes changed from forest are because of urban development project or permission of development work for private person. But the cultivated land biotope changed from forest is because of illegal acts. And so it is necessary to have regard the biotope assessment for urban development project, or to protect illegal cultivating land in forest biotope, for conservation of forest biotope type in Guro.
황산염저부하조건에서 순양한 혐기성오니에 있어서 황산염환원균의 역할
서정인,라원식,남택호 嶺南大學校 環境問題硏究所 1996 環境硏究 Vol.15 No.2
황산염 저부하조건에서 순양한 혐기성오니에 있어서 황산염환원균의 역활을 명확히 하기 위해 메탄생성과 황화물생성에 대한 황산염, 황화물 및 휘발성지방산의 영향을 검토했다. 메탄생성은 황화물과 황산염의 첨가에 의해서 증가되는 경향을 보였다. 동시에 황산염의 환원에 의해 황화물이 생성되었으며, 그 생성속도는 0.30 μ mol·g VSS^-1·hr^-1이고 첨가한 휘발성 지방산의 종류와 관계가 있었다. 그리고 메탄생성속도는 Acetate를 제외한 휘발성지방산이 산화됨과 동시에 황화물생성속도와 함께 증가하였다. 따라서 황산염환원균은 황산염저부하 혐기성오니하에서 Acetate를 제외한 휘발성지방산을 발효적 대사에 이용하여 서식하는 것으로 판단된다. 그리고, 발효적 대사에 의해 생육하는 황산염환원균은 황산염저부하조건에서 Hydrogen-producing acetogens의 역할을 하는 것으로 추측되었다. The effect of sulfate, sulfide and volatile fatty acids on methane production and sulfide production in anaerobic sludge acclimated with sulfate-poor medium was investigated to clarify the role of sulfidogens. Methane production was shown to be stimulated by the addition of sulfide or sulfate. At the same time, sulfide production was measured in serum bottle test in which the sulfate reduction was measured during incubation. The production rate was 0.30 μ mol·g VSS^-l·hr^-1, and was related to the kinds of added volatile fatty acids. And methane production rate was increased with increasing with sulfide production rate in which oxidation of volatile fatty acids exception of acetate was measured during incubation. These results shows that many sulfidogens should inhabit by their fermentation from volatile fatty acids exception of acetate In sulfate-poor anaerobic sludge. And, fermentative-sulfidogens appear to assume the a role of hydrogen-producing acetogens in sulfate-poor condition.