한국환경농학회지 (Korean Journal of Environmental Agriculture)
- 제20권4호
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- Pages.211-217
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- 2001
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- 1225-3537(pISSN)
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- 2233-4173(eISSN)
Zn 및 Cu 오염토양에서 담배에 의한 복원 탐색
Feasibility of Tobacco(Nicotiana tabacum L.) for Phytoremediation of Soil Contaminated with Zn and Cu
- Lee, Sang-Gak (Dept. of Crop Science, College of Life and Environmental Sciences, Korea Univ.) ;
- Kang, Byeung-Hoa (Dept. of Crop Science, College of Life and Environmental Sciences, Korea Univ.)
- 발행 : 2001.12.30
초록
본 연구는 경작지 중금속 오염지역의 식물복원을 위한 방안으로, Zn, Cu처리가 담배식물의 생리반응에 영향하는 형태적인 변화와 엽령에 따른 중금속 축적 양상 및 무기이온의 흡수관계를 분석한 결과는 다음과 같다. Zn, Cu에 따른 간장의 생장감소는 1.0 mM이하에서는 작았고, 지상부 건물중보다는 지하부의 건물중을 크게 감소시켰다. 특히 지하부의 건물중은 약 50%가 감소하였다. Zn, Cu처리시 지상
This study was conducted to evaluate the effect of Zn and Cu on physiological responses of tobacco at the different leaf ages for the purpose of phytoremediation of heavy metal contaminated field. Plant height was significantly decreased at Zn and Cu concentrations of 1.0 mM or higher. Especially, root dry weight decreased more (50% reduced) than shoot dry weight. Zn and Cu accumulation in the shoot and root was dramatically increased after 2.0 mM treatment. The accumulation pattern was different by leaf aging in that Zn accumulated more in senescence leaf and Cu accumulated more in growing leaf. The amounts of heavy metal accumulations per plant were 146,000 mg/kg for Zn and 20,500 mg/kg for Cu at 2.0 mM treatment. The proper harvesting time would be suggested as vegetative growth stage for Zn and reproductive stage for Cu. The concentrations of other inorganic ions (Mg, Mn, Fe) were decreased when Zn and Cu concentrations were increased. Cu concentration and Zn concentration of both shoot and root were decreased in Zn treatment and Cu treatment, respectively.