کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8363515 | 1542584 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Contribution of microbial activity to formation of organically bound chlorine during batch incubation of forest soil using 37Cl as a tracer
ترجمه فارسی عنوان
مشارکت فعالیت های میکروبی در تشکیل کلر متصل به ارگانیک در طی انکوباسیون سطحی خاک جنگل با استفاده از کلرید کلسیم به عنوان تریسی
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کلمات کلیدی
کلر، باکتری، کلر زنی، ردیابی ایزوتوپ، خاک جنگل،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش خاک شناسی
چکیده انگلیسی
Chloride is often considered as the main chlorine form in soils. However, recent studies show that chlorine is mostly present in soils as naturally produced organically bound molecules. The relative contribution of biotic, including microbial, and abiotic processes to formation of organically bound chlorine remains poorly understood. We performed a37Cl spiking batch experiment with a forest soil incubated under abiotic and biotic conditions over two time periods to simultaneously monitor the formation of organically bound chlorine from natural and tracer chlorine. To compare biotic and abiotic conditions without biased effect of sterilization technique for abiotic control, the soil was irradiated and reinoculated or not with soil microflora. Fifteen days after microbial inoculation, the natural non-extractable organic chlorine content in the inoculated soil was significantly higher than in the sterile soil, showing that microbial activity contributed to formation of organically bound chlorine. However, no significant difference was noted between the two incubation periods. The same trend was noted for tracer chlorine, yet without a significant difference. The present study shows that chlorination is mediated by microbial activity, but there is also some indication of abiotic formation of organically bound chlorine, with a non-extractable organic tracer chlorine formation of about 6% just after spiking in abiotic conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 100, September 2016, Pages 210-217
Journal: Soil Biology and Biochemistry - Volume 100, September 2016, Pages 210-217
نویسندگان
Aurélie Osswald, Anne Poszwa, Maïté Bueno, Carine Arnaudguilhem, David Billet, Yves Thiry, Corinne Leyval,