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논문 기본 정보

자료유형
학술저널
저자정보
Buddhi Charana Walpola (University of Ruhuna) K.K.I.U. Arunakumara (University of Ruhuna) Min-Ho Yoon (Chungnam National University)
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제44권 제4호
발행연도
2011.8
수록면
559 - 564 (6page)

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초록· 키워드

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Soil microbial functions are considered to be effective in assessing the severity of heavy metal pollution. Therefore, this study was carried out to examine the effect of heavy metals on nitrogen mineralization by measuring the releasing pattern of inorganic nitrogen (NH</sub>4<sub> <sup>+</sup><sub>-</sub>N and NO<sub>3</sub> <sup>-</sup><sub>-</sub>N) in a soil treated with heavy metals. A factorial combination of two heavy metals (Zn and Cd) treated with three concentrations (50, 100 and 150 μmol g<sup>-1</sup> soils) was used in a laboratory incubation. Nitrogen mineralization was determined at 3, 7, 14, 21, 28, 42 and 56 days after the treatments replicated four times. Soil sample free from heavy metals was served as the control. The amount of nitrogen mineralization from heavy metal treated soils was found to be decreased at an increasing rate during the first 21 days of incubation. However, as the incubation progressed, nitrogen mineralization was found to be decreased at decreasing rates. Furthermore, during this period, nitrogen mineralization in Cd treated soils was significantly lower (P≤0.05) than that of the control. Soils treated with Cd at the concentration of 150 μmol g<sup>-1</sup> showed the lowest N mineralization throughout the incubation. Nitrogen mineralization in Zn treated soils (50 μmol g<sup>-1</sup>) was found to be higher than the other heavy metal treated soils. On the base of present findings, nitrogen mineralization of soil could be considered as a viable assessment of the degree of heavy metal pollution.

목차

Introduction
Materials and Methods
Results and Discussion
Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2014-521-000825011