کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10111015 | 1620002 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variation in throughfall deposition across a deciduous beech (Fagus sylvatica L.) forest edge in Flanders
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
Throughfall deposition and canopy exchange of acidifying and eutrophying compounds and major base cations were studied by means of throughfall analysis in a deciduous beech (Fagus sylvatica L.) forest edge in Belgium over a period of 1 year. Throughfall fluxes of Clâ, NH4+ and Na+ were significantly elevated at the forest edge compared to the forest interior. As no edge effect on throughfall water volume could be detected, the observed edge enhancement effects were mainly due to dry deposition and canopy exchange patterns. Indeed, there was an elevated dry deposition of Clâ, Na+, K+, Ca2+ and Mg2+ up to 50 m from the field/forest border. Within the forest, throughfall and dry deposition of SO42â were highly variable and no significant differences were observed between the forest edge and the forest interior. Leaching of K+ and Ca2+ was reduced in the forest edge up to a distance of 30 m from the border. The measured nitrogen and acidic depositions far exceeded the current Flemish critical loads with respect to the protection of biodiversity in forests, especially at the forest edge. This points to an urgent need for controlling emissions as well as the need to consider the elevated deposition load in forest edges when calculating the critical loads in forests.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 337, Issues 1â3, 20 January 2005, Pages 241-252
Journal: Science of The Total Environment - Volume 337, Issues 1â3, 20 January 2005, Pages 241-252
نویسندگان
Rebecca Devlaeminck, An De Schrijver, Martin Hermy,