کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4426981 1309141 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mapping aerial metal deposition in metropolitan areas from tree bark: A case study in Sheffield, England
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Mapping aerial metal deposition in metropolitan areas from tree bark: A case study in Sheffield, England
چکیده انگلیسی

We investigated the use of metals accumulated on tree bark for mapping their deposition across metropolitan Sheffield by sampling 642 trees of three common species. Mean concentrations of metals were generally an order of magnitude greater than in samples from a remote uncontaminated site. We found trivially small differences among tree species with respect to metal concentrations on bark, and in subsequent statistical analyses did not discriminate between them. We mapped the concentrations of As, Cd and Ni by lognormal universal kriging using parameters estimated by residual maximum likelihood (REML). The concentrations of Ni and Cd were greatest close to a large steel works, their probable source, and declined markedly within 500 m of it and from there more gradually over several kilometres. Arsenic was much more evenly distributed, probably as a result of locally mined coal burned in domestic fires for many years. Tree bark seems to integrate airborne pollution over time, and our findings show that sampling and analysing it are cost-effective means of mapping and identifying sources.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 155, Issue 1, September 2008, Pages 164–173
نویسندگان
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