• 한국제4기학회지
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• 제22권2호
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• pp.23-27
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• 2008

• 대한지리학회지
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• 제31권2호
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• pp.138-159
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• 1996

해방후 50년간 우리 나라의 자연지리학 연구는 주로 지형학과 기후학에 의해 주도 되어 왔다. 자연지리학이 지니는 종합적인 학문적 성격에도 불구하고 개별 각론들이 독자적 으로 연구되어 왔고 그 연구 대상이나 연구 방법이 워낙 다양하기 때문에, 자연지리학 연구 의 전체적인 방향성이나 패러다임을 찾기가 힘들다. 지난 50년간 우리 나라 자연지리학 연 구중에서 지형학과 기후학을 제외한 나머지 연구를 자연지리학 일반으로 간주하고 이들 연 구를 자연지리학 총론, 토양지리학, 식물지리학, 수문지리학, 인간과 자연 환경이라는 주제로 구분해 정리하였다. 원래 자연지리학이 추구하던 통합적 접근방법이 점차 사라지고 자연지 리학 각론들이 각기 이웃한 지구과학과 밀접한 관계를 맺으면서 발전하여 왔다. 다학문적 해결책만이 유일한 대안이 되어 버린 환경 시대를 맞아, 자연지리학이 자연 환경에 대한 고 유의 통합적 접근 방법으로 재무장하여 환경 문제에 대한 주도적 학문으로 부활되기를 기대 한다.

• 한국제4기학회지
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• 제18권2호통권23호
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• pp.59-63
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• 2004

• 동굴
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• 제42권2호
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• pp.41-63
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• 1995

An abundance of information is available regarding soil horizons and their characteristics. Several methods can be used to gather and analyze this information. Through the use of qualitative analysis in the field, and laboratory and statistical analysis, a soil can be compared and analyzed with a great deal of scrutiny. Four soil pits were excavated in Citrus County Florida and samples were collected from each master horizon. Through the use of qualitative and quantitative analysis these samples were compared and analyzed in order to identify unique, as well as homogeneous features. It was determined that the soil profile designated Old Pit was different than other profiles because of landscape position and variations in parent material. Landscape position (ie. slope position) also influenced the genesis and evolution of the soils in the other three profiles(Profile 1, 2 and 3).

• 한국제4기학회:학술대회논문집
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• 한국제4기학회 2005년도 하계학술대회
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• pp.7-11
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• 2005

The soil erosion processes have estimated using spatial distribution of 137Cs radionuclide in Granite and Sedimentary Hillslopes in South Korea. The local variability of 137Cs inventory indicates that was related positively to organic matter content, clay content and water content and negatively to hydraulic permeability and slope gradient for bulk samples in different landforms within Granite and Sedimentary rock basins. The vertical variability of 137Cs inventory shows that most of 137Cs concentration and organic matter were accumulated between 0 and 2cms and gradually decrease with soil depth in incremental samples in both basins. The vertical variability of 137Cs inventories shows that 137Csinventories increase as we go to toward downslope in both basins. Finally, the soil loss values indicate that hillslope erosion processes are more intensive in Granite rock basin than those in Sedimentary rock basin.

• Journal of Microbiology and Biotechnology
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• 제22권2호
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• pp.244-247
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• 2012

To remediate lead (Pb)-contaminated soils, it is proposed that microbially induced calcite precipitation (MICP) would provide the best alternative to other remediation technologies. In this study, Pb bioremediation in soils was investigated using the calcite-precipitating bacterium Kocuria flava. Results indicate that the Pb is primarily associated with the carbonate fraction in bioremediated soil samples. The bioavailability of Pb in contaminated soil was reduced so that the potential stress of Pb was alleviated. This research provides insight into the geochemistry occurring in the MICP-based Pb-remediated soils, which will help in remediation decisions.

• 한국제4기학회지
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• 제19권1호
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• pp.41-46
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• 2005

This study discusses the soil erosion on hillslopes and sediment deposition in lakes within catchments in South Korea. In order to determine seasonal variations of sedimentation in Yeongcheon and Seondong lakes, the sediment traps were set in the deep part of both lakes and lake sediments have been sampledmonthly from July 2004 to August 2005. Some properties such as highmineral content, fine particle size and high particle density in the Yeongcheon Lake indicate intensive soil erosion, sediment transportation and deposition throughout the catchment for a long time. The high sediment yield in the Seondong Lake is related with higher weathering intensity and extreme soil erosion by running water due to higher seasonal rainfall amount. Rates of erosion and sedimentation in the Seondong Lake are estimated to be higher than those of the Yeongcheon Lake, suggesting that the Seondong Lake is associated with higher precipitation, smaller catchment area, and extreme soil vulnerability to ephemeral erosion by overland flow during the heavy rainfall event. Consequently, both catchments are characterized by different erosion and sedimentation processes, as well as different geomorphic factors (bedrock, soil structure, rainfall intensity and catchment area).

• 한국제4기학회지
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• 제19권2호
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• pp.28-30
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• 2005

• 한국제4기학회지
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• 제22권2호
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• pp.38-38
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• 2008

• Journal of Ginseng Research
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• 제43권1호
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• pp.77-85
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• 2019

Background: Glomus intraradices is a species of arbuscular mycorrhizal fungi that, as an obligate endomycorrhiza, can form mutually beneficial associations with plants. Panax ginseng is a popular traditional Chinese medicine; however, problems associated with ginseng planting, such as pesticide residues, reduce the ginseng quality. Methods: In this experiment, we studied the effect of inoculating G. intraradices on several physiological properties and microbial communities of ginseng. UV-Visible Spectrum method was used to detect physical properties. Denaturing gradient gel electrophoresis method was used to analyze microbial communities. Results: The results indicated that inoculation with G. intraradices can improve the colonization rate of lateral ginseng roots, increase the levels of monomeric and total ginsenosides, and improve root activity as well as polyphenol oxidase and catalase activities. We also studied the bacterial and fungal communities in ginseng rhizospheric soil. In our study, G. intraradices inoculation improved the abundance and Shannon diversity of bacteria, whereas fungi showed a reciprocal effect. Furthermore, we found that G. intraradices inoculation might increase some beneficial bacterial species and decreased pathogenic fungi in rhizospheric soil of ginseng. Conclusion: Our results showed that G. intraradices can benefit ginseng planting which may have some instructive and practical significance for planting ginseng in farmland.