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이영한(Young-Han Lee),손연규(Yeon Kyu Sonn),이성태(Seong-Tae Lee),허재영(Jae-Young Heo),김민근(Min-Keun Kim),김은석(Eon-Seok Kim),송원두(Won-Doo Song),장용선(Yong-Sun Zhang),전원태(Weon-Tai Jeon),옥용식(Yong Sik Ok) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.2
경남지역 논토양의 양분관리를 위한 기초자료를 제공하기 위해 260 지점의 화학성분 변동을 1999년부터 2011년까지 4년 주기로 분석하였다. 논토양 pH, 유기물 함량, 유효인산 함량, 유효규산 함량, 치환성 칼슘 및 마그네슘 함량은 1999년에 비해 2011년에 유의적으로 증가하였다. 유기물 함량의 초과비율은 1999년 40.0%, 2003년 30.4%, 2007년 48.5%, 2011년 50.8%로 증가하였다. 유효인산 함량의 초과비율은 1999년 55.0%, 2003년 57.7%, 2007년 52.7%, 2011년 63.5%로 2배 이상 과잉 집적되었다. 유기물 함량은 홍적대지에서 가장 높았고 유효인산 함량은 산록경사지에서 가장 높았다. 논토양의 통계분석과 주성분 분석을 통하여 경남지역 논토양의 유효인산 함량은 지형별 화학특성을 구별할 수 있는 중요인자로 판단되었다. Sustainable agriculture requires reliable information on the spatial distribution of the soil chemical properties for effective management of paddy fields. In order to provide adequate soil nutritional information for environmental-friendly agriculture, we investigated the soil chemical properties for 260 paddy soils sampled in Gyeongnam Province from 1999 to 2011 by four years of interval. Soil chemical properties of pH, organic matter, available phosphate and silicate, exchangeable potassium, calcium, and magnesium contents were analyzed. The pH value, organic matter, available phosphate and silicate, and exchangeable calcium and magnesium in paddy soils were significantly elevated in 2011 compared to 1999. The excessive levels of organic matter and available phosphate in paddy soils were detected in 2011. The soil available phosphate was highest in mountain foot-slope (p〈 0.05) and the soil organic matter was highest in diluvial terrace (p〈 0.05). It revealed that the soil available phosphate was the responsible factor for the differentiation of soil chemical properties by the topography in paddy soils.
커뮤니케이션 전략과 매체에 따른 공중의 위기 커뮤니케이션 수용 정도
이영한 ( Young Han Lee ),서연경 ( Yeon Kyeong Seo ),남호영 ( Ho Yeong Nam ),황고은 ( Go Eun Hwang ),성민정 ( Min Jung Sung ) 한국PR학회 2012 PR연구 Vol.16 No.1
The current study investigated how the type of media influences the effectiveness of crisis communication strategies. According to the findings, the level of acceptance was higher when an accommodative strategy was adopted compared to a defensive strategy. The type of media-newspaper, internet news, corporate blog, and corporate twitter-had a significant influence on the level of acceptance. Furthermore, an interaction effect was found between the type of media and the type of crisis communication strategy. For example, the level of acceptance was highest when the accommodative strategy was used through the corporate blog whereas the level of acceptance was lowest through the internet news. On the other hand, when the defensive strategy was used, the level of acceptance was highest with the internet news, while the corporate blog showed the lowest level of acceptance.
이영한(Young-Han Lee),안병구(Byung-Koo Ahn),이성태(Seong-Tae Lee),신민아(Min-A Shin),김은석(Eun-Seok Kim),송원두(Won-Doo Song),손연규(Yeon Kyu Sonn) 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.6
경남지역 논 토양의 미사질양토 11개소, 사양토 4개소, 양토 5개소를 선정하여 FAME 분석기법을 적용하여 미생물 군집을 분석하였다. 곰팡이 지방산 함량은 양토가 76 nmolg<SUP>-1</SUP>로서 사양토 45 nmol g<SUP>-1</SUP>에 비해 유의적으로 많았다 (p 〈 0.05). 토양 양이온 치환용량은 미사질양토가 14.7 cmolc kg<SUP>-1</SUP>으로 사양토 11.8 cmolc kg<SUP>-1</SUP>보다 유의적으로 높았다 (p 〈 0.05). cy19:0과 18:1ω7c 비율은 미사질양토가 0.77로 사양토 0.47 보다 유의적으로 높았다 (p 〈 0.05). 방선균 군집은 양토가 1.34%로 사양토의 0.92%에 비해 유의적으로 많았다 (p 〈 0.05). The present study evaluated the soil microbial communities by fatty acid methyl ester (FAME) method in paddy soils at 11 sites for silt loam, 4 sites for sandy loam, and 5 sites for loam in Gyeongnam Province. The FAME content of fungi in loam (76 nmol g<SUP>-1</SUP>) was higher than that of in sandy loam (45 nmol g<SUP>-1</SUP>). Sandy loam had significantly lower ratio of cy19:0 to 18:1ω7c compared with that of silt loam (p〈0.05), indicating that microbial stress decreased. In addition, actinomycetes community of loam was higher than that of sandy loam.
이영한(Young-Han Lee),손연규(Yeon Kyu Sonn),옥용식(Yong Sik Ok) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.3
경남지역 논 토양의 중금속 관리를 위한 기초 자료를 제공하고자 260 지점을 대상으로 2011년에 Cd, Cu, Ni, Pb, Zn 및 As 전함량과 0.1N HCl 가용성 Cr 함량을 분석하였다. 논토양의 중금속 평균 함량은 Cd 0.143 (범위 0.003-0.537) mg kg<SUP>-1</SUP>, Cr 0.322 (0.002-0.986) mg kg<SUP>-1</SUP>, Cu 25.41 (6.03-76.19) mg kg<SUP>-1</SUP>, Ni 16.36 (2.63-32.94) mg kg<SUP>-1</SUP>, Pb 18.67 (4.16-87.02) mg kg<SUP>-1</SUP>, Zn 71.76 (22.99-153.58) mg kg<SUP>-1</SUP>, As 3.516 (0.002<SUP>-1</SUP>9.481) mg kg<SUP>-1</SUP> 였다. 논토양에서 Cd 함량은 산록경사지에서 가장 높은 반면 Ni과 As 함량은 홍적대지, Zn 함량은 해안평탄지에서 가장 높았다. 또한, Cd, Cu 및 Zn 함량은 미사질식양토에서 미사질양토, 사양토 및 양토 보다 높은 경향이었다. The management of heavy metals in soil is important for environmental-friendly agriculture and keeping an ecosystem healthy. In this study, we examined the concentrations of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn, and As) in 260 paddy soils sampled from Gyeongnam Province. The concentrations of the heavy metals were 0.143 mg kg<SUP>-1</SUP> (ranged 0.003-0.537) for Cd, 0.322 (0.002-0.986) mg kg<SUP>-1</SUP> for Cr, 25.41 (6.03-76.19) mg kg<SUP>-1</SUP> for Cu, 16.36 (2.63-32.94) mg kg<SUP>-1</SUP> for Ni, 18.67 (4.16-87.02) mg kg<SUP>-1</SUP> for Pb, 71.76 (22.99<SUP>-1</SUP>53.58) mg kg<SUP>-1</SUP> for Zn, and 3.516 (0.002<SUP>-1</SUP>9.481) mg kg<SUP>-1</SUP> for As, respectively. In addition, the concentration of Cd was highest in mountain foot-slope, Ni and As were highest in diluvial terrace, and Zn was highest in marine plains. Higher concentrations of Cd, Cu, and Zn were found in silty clay loam soils compared to silt loam, sandy loam, and loam soils.