부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.scitotenv.2008.05.043 Byline: Abir Biswas (a), Joel D. Blum (a), Gerald J. Keeler (a)(b) Keywords: Mercury; Soil; Forest; Fire; Release; Rex Creek Fire Abstract: Recent investigations indicate that wildfires provide a significant flux of mercury (Hg) from terrestrial ecosystems to the atmosphere. However, little is known about how geographic location, climate, stand age, and tree species affect Hg accumulation prior to burning and loss during burning. Soil cores collected in sites burned during the summer 2001 Rex Creek Fire in the eastern Cascade Mountains (Washington State, USA) and in adjacent unburned control sites indicate that Hg loss from soils during the Rex Creek Fire averaged 6.7 ([+ or -]2.5) g Hg ha.sup.-1. This soil profile-based estimate of Hg release is higher than a previous estimate for the same fire based on airborne measurements of Hg and CO concentrations in smoke. This study has implications for global estimates of Hg storage in forests and release to the atmosphere during wildfires. Author Affiliation: (a) Department of Geological Sciences, University of Michigan, 1100 N. University Ave., Ann Arbor, Michigan 48109, USA (b) Air Quality Laboratory, University of Michigan, 109 S. Observatory, Ann Arbor, Michigan 48109, USA Article History: Received 10 December 2007; Revised 30 April 2008; Accepted 31 May 2008