http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
신간척지(新干拓地)에서 근권(根圈)의 염농도(鹽濃度) 저하(低下) 방법(方法)이 토양특성(土壤特性)과 작물생육(作物生育)에 미치는 영향(影響)
조영길,조인상,엄기태,Cho, Yeong-Kil,Jo, In-Sang,Um, Ki-Tae 한국토양비료학회 1992 한국토양비료학회지 Vol.25 No.2
간척지(干拓地)에서 밭작물재배에 필요한 자료를 얻고져 포승(浦升) 미사질식양토(微砂質埴壤土)에서 표면배수(表面排水), 암거배수(暗渠排水), 40cm 깊이 프라스틱막설치등(膜設置等)의 상이한 배수조건(排水條件)에서 토양개량제(土壤改良劑)인 객토, 석고, 제오라이트를 처리하여 면화(棉花)와 목초(牧草) 재배하면서 토양특성(土壤特性)과 작물(作物) 수량(收量)을 조사 분석하였다. 토양(土壤)의 경도(硬度)와 가비중(假比重)은 암거(暗渠) 및 프라스틱막설치(膜設置)로 낮아졌으며, 개량제별로는 객토처리구(客土處理區)가 효과적이었고, 석고와 제오라이트 처리는 10cm 이하(以下) 깊이의 가비중(假比重)을 높게 하였다. 토양수분함량(土壤水分含量)은 건조시에 암거배수(暗渠排水) 및 프리스틱막설치구(膜設置區)보다 표면배수구(表面排水區)에서 높았으며 강우시에는 프라스틱막설치구(膜設置區)에서 가장 높았다. 토양용액(土壤溶液)의 전기전도도(電氣傳導度)(EC)는 암거배수구(暗渠排水區)에서 강우시에는 $0.4SM^{-1}$이하(以下)로 떨어지고 전기간을 통하여 표면배수(表面排水)에 비(比)하여 1/2-1/4의 낮은 수준을 유지하였다. 면화수량(棉花收量)은 암거구(暗渠區), 프라스틱막설치구(膜設置區), 표면배수(表面排水)의 순이었으며, 암거구(暗渠區)의 제오라이트 및 석고(石膏) 처리(處理)는 생육이 가장 양호하였으며, Tall fescue수량(收量)은 암거구(暗渠區)의 객토처리(客土處理)에서 높았고 염농도(鹽濃度)와 목초(牧草) 및 면화수량(棉花收量)은 고도의 유의성 있는 상관이 있었다. This experiment was conducted to find out the useful data for upland crop cultivation in the newly reclaimed tidal land. Poseung silty clay loam soil was selected, and cotton(Mogpo VII) and tall fescue were cultivated under different drainage systems and soil ameliorator applications. Soil hardness and bulk density were decreased by subsurface drainage and plastic film installed at 40cm depth of the soil. Red earth application was also effective to loosen the soil, but zeolite and gypsum made the subsoil compact. Water content of the soil was high in surface drain than that of subsurface drain or plastic film curtain plot during dry season. The water content was in order of plastic film curtain, surface drain and subsurface drain. Electrical conductivity(EC) was decreased to lower than 0.4 Simens $meter^{-1}$ ($SM^{-1}$) in the subsurface drain during rainy season, and the EC of subsurface drain was maintained a quater to an half of surface drain. The yield of cotton and tall fescue were high in order of subsurface drain, plastic film curtain and surface drain plot. The yields of cotton were increased to 36-73 % by ameliorator application, and the red earth application was more effective for tall fescue growth compare to gypsum and zeolite.
황해 동부 대륙붕과 한반도 서해안 표층퇴적물의 지구화학적 특성
조영길,이창복,박용안,김대철,강효진 한국제4기학회 1993 제사기학회지 Vol.7 No.1
한반도 서해안의 금강하구와 연안 조간대 및 황해 동부 대륙붕에서 채취된 76개의 표층퇴적물 시료에 대하여 Al, Fe, Na, K, Mg, Ca, Ti, Mn 등 9개 주성분원소와 Sr, Ba, V, Cr, Co, Ni, Cu, Zn 등 8개 미량 금속원소, 그리고 유기탄소 함량과 탄산염 함량 등의 화학성분을 분석하여 퇴적물의 지구화학적 특성을 연구하였다. 분석된 원소들의 함량은 K과 Ba을 제외하곤 지각의 평균함량에 비해 전반적으로 낮게 나타났으며, K과 Ca 등을 제외한 대부분 원소의 함량이 퇴적물 입도와 관련성을 보였다. 연구지역 내에서 퇴적물의 화학성분 함량은 퇴적환경 이나 위치에 따라 서로 다른 특성을 나타내었으며, 세립퇴적물의 경우 금강하구의 퇴적물에서 상대적으로 높은 Mn, Co, Ni의 함량이, 그리고 황해중앙이토에서는 높은 Fe, Na, K, Mg, Ca, V의 함량이 특징으로 나타났다. 한편. 원소함량을 Al함량으로 나눈 함량비의 공간적 분포로부터는 황해중앙이토에서 Fe, Mg, V, Ni, Cu, Zn 등이, 그리고 한반도 연안에서는 K, Mn, Ba, Sr 등이 높아지는 경향이 나타났다. 이렇게 분석된 세립퇴적물 지화학 특성의 지역적 차이, Al에 대한 함량비의 분포경향, 지각 평균함량을 기준한 원소의 농축비, 특정 광물분포의 영향, 오염의 가능성 등 제반 사항들을 종합적으로 검토하여 본 연구지역에 유입되는 한반도 기원 세립물질과 중국 기원 세립물질을 구분할 수 있는 지화학적 지표로서 각각 Mn과 Mg-V이 제시되었다. A total of 76 surface sediment samples, collected from the Korean west coast and the eastern Yellow Sea areas, were analyzed for their elemental composition in order to understand the geochemical characteristics of these deposits. The analyzed elements included 9 major elements (Al, Fe, Na, K, Mg, Ca, Ti, P, Mn), 8 minor elements (Sr, Ba, V, Cr, Co, Ni, Cu, Zn), organic carbon and calcium carbonate. Contents of most analyzed elements, excluding K and Ba, were generally low compared to those of average crust. Contents of most elements, except K and Ca, also correlated with sediment grain size, though the degree of relationship varied widely from one element to another. For fine-grained sediments, a distinction could be made between those in the central Yellow Sea and those in the Keum Estuary based on their characteristic elemental composition: the former were rich in Fe, Na, K, Mg, Ca and V, and the latter in Mn, Co and Ni. The element/aluminium ratios, on the other hand, showed that the central Yellow Sea muds were enriched in Fe, Mg, V, Ni, Cu and Zn and depleted in K, Mn, Ba and Sr relative to the mud located near the Korean Peninsula. Based on the analysis of these results, as well as of the influences of particular mineral phases or pollution effects, we could suggest geochemical criteria which can be used in distinguishing muds from the two different sources, the Keum River and the Yellow River: the former by the higher Mn content and the latter by the higher Mg and V contents, relative to each other.
만경강 및 동진강 하상 퇴적물의 중금속 함량과 분포 특성
조영길,장진호 목포대학교 기초과학연구소 2000 基礎科學硏究誌 Vol.18 No.-
Twenty-two sediment samples collected from the Mangyung and Dongjin river bed were analysed for Al, Fe, Mn, Co, Cr, Cu, Ni, Zn and Pb to recognize the extent of contamination. Results showed that a wide range of concentrations was apparent for every metal in both rivers. These variations were particularly significant at the confluence of tributaries. Aluminium normalization of Fe, Co and Ni concentrations indicates that they are at or near natural levels as a result of natural granular and mineralogical variability in the sediments. High levels of Mn, Cr, Cu, Zn and Pb, however, occur in the confluence of tributaries. Downstream profile and metal/Al ratios indicate that pollutant inputs from the tributaries are mainly responsible for enrichment of heavy metals in bed sediments of the Mangyung River.
조영길,이창복 한국해양학회 1994 韓國海洋學會誌 Vol.29 No.4
Sediment samples from the continental shelf of the South Sea of Korea are analysed to determine the concentration of Al, Fe, Mn, cu, Ni, Zn, Co, Cr and Pb. among these samples, fine-grained sediments were also analysed by a sequential extraction technique to know geochemical forms of the metals in this environments. The total concentration of Al, Fe, Cr, Ni, Cu and Zn in bulk sediments decreased gradually with the increase of distance from the coastal zone. This distribution patterns are well coincide with grain size distribution. However, the patterns of Mn, co and Pb do not follow such and overall distribution. The concentration of Pb, particularly, did not show any features in areal distribution, which may be result from different pathways to the sediments, compared to the other metals. the speculation data show that a considerable amount of Cd, Mn and Co are bounded in the carbonate fraction, accounting for 42.8%, 40.3% and 30.6%, respectively. Cu, Zn, Mn and Fe are largely associated to oxide fraction with proportions of 34.4%, 23.1%, 15.5% and 13.7%, respectively. However, the metals in residual fraction account for more than 50% of the total metal concentration, except for Mn. These observations emphasize that residual fraction in the dominant component controlling the elemental concentration.quartz and glauconite grains.Accordingly,these sediments are interpreted as an extension part of transgressive sand deposit that are widely distributed on the continental shalf floor of southern Yellow Sea.