کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5117184 | 1378118 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High mercury accumulation in two subtropical evergreen forests in South China and potential determinants
ترجمه فارسی عنوان
تجمع جیوه بالا در دو جنگل نیمه گرمسیری همیشه سبز در جنوب چین و عوامل تعیین کننده آن
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Forests play an important role in global mercury (Hg) cycling. To explain the high Hg accumulation in subtropical forest ecosystems, we studied temporal dynamics of Hg, carbon (C), nitrogen (N), and sulfur (S) in forest soil profiles, as well as litterfall flux and precipitation, in an old-growth moist evergreen broadleaf (EB) forest and a mossy coppice (MC) forest from South China over seven years. The mean soil Hg concentration was 257 ± 14 ng gâ1 in the O-horizon and 248 ± 15 ng gâ1 in the A-horizon for the EB forest, and 94 ± 27 ng gâ1 in the O-horizon and 70 ± 11 ng gâ1 in the A-horizon for the MC forest. Annual variations in Hg concentration were suggested to be associated with variations in precipitation and litterfall biomass. Significant vertical Hg transport was only observed in the MC forest, which was attributed to its lower organic matter content. Correlation and stoichiometry analyses further suggested that the dynamics in Hg concentration in the forest floor was also closely linked to the variation in S concentration. Additionally, the difference in the soil Hg pool between these two forests was attributed to different litterfall biomass fluxes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 183, Part 3, 1 December 2016, Pages 488-496
Journal: Journal of Environmental Management - Volume 183, Part 3, 1 December 2016, Pages 488-496
نویسندگان
Zhiyun Lu, Xun Wang, Yiping Zhang, Yong-Jiang Zhang, Kang Luo, Liqing Sha,