Yang Junxing1; Liu Yong2; Ye Zhihong3
Source Publicationpedosphere
AbstractA rhizobox experiment was conducted to compare iron (Fe) oxidation and changes of pH, redox potential (Eh) and fractions of zinc (Zn) and lead (Pb) in rhizosphere and non-rhizosphere soils of four emergent-rooted wetland plants (Echinodorus macrophyllus, Eleocharis geniculata, Hydrocotyle vulgaris and Veronica serpyllifolia) with different radial oxygen loss (ROL) from roots. The results indicated that all these wetland plants decreased pH and concentration of Fe(Ⅱ) but increased the Eh in the rhizosphere soils. Pb and Zn were transformed from unstable fractions to more stable fractions in the rhizosphere soils, so decreasing their potential metal mobility factors (MF). Among the four plants, E. macrophyllus, with the highest ROL and root biomass, possessed the greatest ability in formation of Fe plaque and in the reduction of heavy metal MFs in the rhizosphere soil. Wetland plants, with higher ROLs and root biomass, may thus be effective in decreasing potential long-term heavy metal bioavailabilities.
Document Type期刊论文
2.South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Yang Junxing,Liu Yong,Ye Zhihong. rootinducedchangesofphehfeandfractionsofpbandzninrhizospheresoilsoffourwetlandplantswithdifferentradialoxygenlosses[J]. pedosphere,2012,22(4):518.
APA Yang Junxing,Liu Yong,&Ye Zhihong.(2012).rootinducedchangesofphehfeandfractionsofpbandzninrhizospheresoilsoffourwetlandplantswithdifferentradialoxygenlosses.pedosphere,22(4),518.
MLA Yang Junxing,et al."rootinducedchangesofphehfeandfractionsofpbandzninrhizospheresoilsoffourwetlandplantswithdifferentradialoxygenlosses".pedosphere 22.4(2012):518.
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