Distribution of Exchangeable Al, Fe and Mn in Forest Soils from Two Contrasting Watersheds in the Oil Sands Region in Northern Alberta, Canada
2007
Ok, Y.S. (University of Alberta, Edmonton, Alberta, Canada) | Arshad, Muhammad A. (University of Alberta, Edmonton, Alberta, Canada) | Chang, Scott X. (University of Alberta, Edmonton, Alberta, Canada), E-mail: scott.chang@ualberta.ca | Feng, Yongsheng (University of Alberta, Edmonton, Alberta, Canada)
A better understanding of the behavior of metals such as Al and Fe in soils receiving atmospheric acidic deposition will help us understand why certain forest ecosystems are sensitive to acidification and ecological stress [Jansen et al., 2005; Xue et al., 2006]. In general, pH and organic matter content are two important parameters affecting the mobilization of metal in the soil [Ok et al., 2002; Ok et al., 2003]. However, the factors governing the mobilization of metals in forest ecosystems are not fully understood. The objectives of this study were to (ⅰ) quantify the distribution of metals (Al, Fe and Mn) in the soil profiles of two contrasting watersheds, and (ⅱ) evaluate the relationship between exchangeable metals and other soil chemical variables in order to understand possible mechanisms for metal retention and/or mobilization in the forest soils in the oil sands region of northern Alberta, Canada.
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