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김민석 ( Min Suk Kim ),민현기 ( Hyun Gi Min ),이병주 ( Byeong Joo Lee ),장세인 ( Se In Chang ),김정규 ( Jeong Gyu Kim ),구남인 ( Na Min Koo ),박정식 ( Jeong Sik Park ),박관인 ( Gwan In Bak ) 한국환경농학회 2014 한국환경농학회지 Vol.33 No.2
BACKGROUND: Recent studies using various industrial wastes for heavy metal stabilization in soil were conducted in order to find out new alternative amendments. The acid mine drainage sludge(AMDS) contains lots of metal oxides(hydroxides) that may be useful for heavy metal stabilization not only waste water treatment but also soil remediation. The aim of this study was to investigate the applicability of acid mine drainage sludge for heavy metals stabilization in soils METHODS AND RESULTS: Alkali soil contaminated with heavy metals was collected from the agricultural soils affected by the abandoned mine sites nearby. Three different amounts(1%, 3%, 5%) of AMDS were applied into control soil and contaminated soil. For determining the changes in the extractable heavy metals, CaCl2 and Mehlich-3 were applied as chemical assessments for metal stabilization. For biological assessments, lettuce(Lactuca sativa L.) and chinese cabbage(Brassica rapa var. glabra) were cultivated and accumulation of heavy metals on each plant were determined. It was revealed that AMDS reduced heavy metal mobility and bioavailability in soil, which resulted in the decreases in the accumulation of As, Cd, Cu, Pb, and Zn in each plant. CONCLUSION: Though the high level of heavy metal concentrations in AMDS, any considerable increase in the heavy metal availability was not observed with control and contaminated soil. In conclusion, these results indicated that AMDS could be applied to heavy metal contaminated soil as an alternative amendments for reducing heavy metal mobility and bioavailability.
연구보문 : 토양환경; 여러 안정화제가 산성 및 알칼리 토양에서 중금속 안정화에 미치는 영향
김민석 ( Min Suk Kim ),민현기 ( Hyun Gi Min ),김정규 ( Jeong Gyu Kim ),구남인 ( Na Min Koo ),박정식 ( Jeong Sik Park ),박관인 ( Gwan In Bak ) 한국환경농학회 2014 한국환경농학회지 Vol.33 No.1
BACKGROUND: Recent studies using many amendments for heavy metal stabilization in soil were conducted in order to find out new materials. But, the studies accounting for the use of appropriate amendments considering soil pH remain incomplete. The aim of this study was to investigate the effects of initial soil pH on the efficiency of various amendments. METHODS AND RESULTS: Acid soil and alkali soil contaminated with heavy metals were collected from the agricultural soils affected by the abandoned mine sites nearby. Three different types of amendments were selected with hypothesis being different in stabilization mechanisms; organic matter, lime stone and iron, and added with different combination. For determining the changes in the extractable heavy metals, water soluble, Mehlich-3, Toxicity Characteristic Leaching Procedure, Simple Bioavailability Extraction Test method were applied as chemical assessments for metal stabilization. For biological assessments, soil respiration and root elongation of bok choy (Brassica campestris ssp. Chinensis Jusl.) were determined. CONCLUSION: It was revealed that lime stone reduced heavy metal mobility in acid soil by increasing soil pH and iron was good at stabilizing heavy metals by supplying adsorption sites in alkali soil. Organic matter was a good source in terms of supplying nutrients, but it was concerning when accounting for increasing metal availability.
연구논문(硏究論文) : 새만금 방조제 개활지의 준설토 기반에 대한 배수층재 처리가 수목 생육에 미치는 효과
이한나 ( Han Na Lee ),임주훈 ( Joo Hoon Lim ),구남인 ( Na Min Koo ),배상원 ( Sang Won Bae ) 한국환경복원기술학회 2015 한국환경복원기술학회지 Vol.18 No.1
This study was performed to compare the effects of different drainage layers on tree growth at the exposed sites of Saemangeum sea dike. 4 types of drainage layers including control(dredged soil), specially prepared bark, gravel, and wood chip were set in 150~165cm depth of soil. Pinus thunbergii and Celtis sinensis were planted after 9 months of soil treatment. Electrical conductivity(EC) of soil in all treated plots were decreased under 4dS?m-1, and NaCl(%) was decreased under 0.05% after 1 year from soil treatment. Soil moisture at the 120cm depth of the bark treated plot was higher than that of the 180cm soil depth, below the drainage layer. It is considered that vertical mobility of water was inhibited. Organic matter(OM) at the 120cm soil depth increased at bark and wood chip treated plots. Survival rates after 4 years of P. thunbergii and C. sinensis were 100% in all treatments. The height of P. thunbergii was not significantly different among the treatments while the height of C. sinensis was significantly different among the treatments and it was highest at the bark treated plot.
준설토 매립지의 토양 개량 방법에 따른 수목 생육과 발생 초본의 비교
이한나 ( Han Na Lee ),구남인 ( Na Min Koo ),임주훈 ( Joo Hoon Lim ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-
본 연구는 노출된 간척지에 준설토로 매립된 지역에서 수목이 생육할 수 있도록 수목생육기반을 연구하는데 그 목적이 있다. 준설토, 준설토 + 개량제, 준설토 + 개량제 + 황토 처리구를 조성하였고 소나무, 느릅나무, 복자기를 식재하였다. 소나무와 느릅나무의 생존율과 수고를 조사한 결과, 소나무와 느릅나무의 생존율은 준설토 처리구 내에서 두 수종 모두 97%로 나타나 우수하였으나 복자기는 모든 처리구에서 고사하였다. 소나무의 수고는 처리구간 유의차를 가지지 않았으나 느릅나무의 수고는 개량제를 포함한 처리구에서 준설토 처리구 보다 50% 정도 높았다. 1년간 잡초 제거 작업없이 발생한 초본을 조사하였다. 준설토 + 개량제 처리구에서 취명아주 외 16종이 출현하였고, 준설토 + 개량제 + 황토 처리구에서 10개 종이 출현하였으며 피복율은 100%로 나타났다. 발견된 초종들은 개량제에 유입된 종자에 의해 발생하였으며 초본 발생으로 인해 소나무와 느릅나무, 복자기의 활착에 어려움을 준 것으로 판단된다. 소나무는 준설토 처리구에서 느릅나무는 개량제 처리구에서 생육 조건이 더 우수하였으며, 두 수종간의 생육 차이는 양분 요구도 차이와 초본 발생량 차이 때문인것으로 판단된다. The purpose of this study is to compare the tree vegetation base for growth of 3 species under the improve soil of the reclaimed land. The study plots [① dredged soil(control), ② dredged soil + soil conditioner, ③ dredged soil + soil conditioner + red clay] are established for soil improvement. Pinus densiflora, Ulmus davidiana var. japonica and Acer triflorum were planted. Mean survival rate of P. densiflora and U. davidiana were 97% better at dredged soil than the treatment. A. triflorum was 0% in all plots . Height of P. densiflora showed no significant difference. However, height of U. davidiana was 50% better at treated soil conditioner than dredged soil. 17 herb species with Chenopodium glaucum L. appeared in the dredged soil + soil conditioner and 10 herb species was found in the dredged soil + soil conditioner + red clay. The herb species showed 100% of the surface coverage rate after 1 year from without weed removal time. The herb species were germinated by the seed into the soil conditioner. P. densiflora, U. davidiana and A. triflorum are difficult to survival because of herb species appearance. Growth and survival rate of P. densiflora is better on dredged soil and Growth and survival rate of U. davidiana is better on treated soil improvement. It seems to be that growth of 2 species affect by nutrient requirements and herb species appearance.
산불 이후 고성 지역 잣나무 인공조림지의 물 요구량 추정 연구
박찬우 ( Chan Woo Park ),김용석 ( Yong Suk Kim ),구남인 ( Na Min Koo ),임주훈 ( Joo Hoon Lim ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-
본 연구는 간단히 획득가능한 기상자료를 이용하여 고성 지역에 산불 이후 조림된 잣나무 조림지에서의 물 요구량을 추정하기 위하여 수행되었다. 2011년 12월부터 2012년 11월까지 1년 동안의 대기온도, 대기습도, 일사량, 이슬점, 풍속 자료를 수집하고, FAO Penman-Monteith 식을 이용하여 잠재증발산량을 계산하였다. 또한 작물계수를 적용하여 잣나무 조림지의 물 요구량을 추정하였으며, 강수량과의 비교를 통하여 물 수지를 추정하였다. 잣나무 조림지의 물 요구량은 2.04 mm day-1로 나타났으며, 계절에 따라 0.74 mm day-1부터 3.34 mm day-1까지의 범위를 보였다. 연간 총 물 요구량은 747.5 mm year-1로 산출되었다. 월별로는 4월부터 7월까지의 물 요구량이 8월부터 3월까지의 물 요구량보다 높았으며, 이는 일사량의 차이에 의한 것으로 여겨진다. 1월, 2월, 5월, 6월, 10월의 월물요구량은 강수량보다 많았다. 7월에는 물요구량이 매우 높았음에도 물 수지가 양의 값을 보였는데, 이는 이 기간의 강수량이 많았기 때문으로 판단된다. 이러한 결과는 늦은 겨울과 늦은 봄에 고성지역 잣나무 조림지에 물부족 현상이 발생할 수 있음을 의미한다. 본 연구를 통해 추정된 물요구량의 정확성을 검증하기 위해서는 기후 요인을 통해 계산된 잠재증발산량과 실제 현지에서의 증발산량간의 비교 연구가 필요할 것으로 여겨진다. The water requirement (WR) and water deficit was estimated using by meteorological data of the Pinus koraiensis plantation on burned area in Goseong. The meteorological data such as the air temperature, relative humidity, solar radiation, dew point, and wind speed was collected from December 2011 to November 2012. The potential evapotranspiration was calculated by the FAO Penman-Monteith equation, then crop coefficient was adopted to estimate the annual WR of study area. The water balance of study area was also evaluated. The WR of the P. koraiensis plantation was 2.04 mm day-1 and it ranged from 0.74 mm day-1 to 3.34 mm day-1 according to the month. Total annual water requirement was 747.5 mm year-1. The monthly WR was higher in April to July than that in August to March since the solar radiation was high. The WR of January, February, May, June, and October was exceeded monthly rainfall. There were lots of surplus water in July despite of relative high WR. It was derived from the heavy rain in those season. The result suggests that there is a possibility of lack of water in late winter and late spring. Further study on comparing the estimated potential evapotranspiration to field measured evapotranspiration is needed to evaluate accuracy of calculated WR.