کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
305486 513031 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Depth dependence of black carbon structure, elemental and microbiological composition in anthropic Amazonian dark soil
ترجمه فارسی عنوان
وابستگی عمیق به ساختار کربن سیاه، ترکیب عنصری و میکروبیولوژیکی در خاک تاریک آمازون خاکی
کلمات کلیدی
خاک تاریک آمازون، عمق خاک، کربن سیاه، میکروبیوتا، قارچ، باکتری، میکوریزهای آربوسکولار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Terra preta do Índio soil composition was studied as a function of soil depth.
• Elemental and microbiological (bacterial and fungi) composition depends on depth.
• Recovered fungi belong to Ascomycota and Glomeromycota.
• Pyrogenic black carbon nanostructure is highly stable and independent of depth.

“Terras Pretas de Índio” are anthropic Amazonian soils rich in pyrogenic black carbon, which might be responsible for the soil long-term stability and high fertility. This black carbon, produced by the Indians while handling their residues, became a model material for agriculture and environment. The key question to answer for artificially reproducing the desired agricultural properties of the Terra Preta de Índio is whether the black carbon structure found today in these soils is the same as produced by the ancient Indians, or whether its structure results from long-term complex physical, chemical and biological activities in the soil. To address this question, this work investigates the depth dependence of the properties from a soil collected from the Balbina site, in Presidente Figueiredo, Amazonas State, Brazil. The black carbon structure and the soil composition are investigated, with special emphasis on the poorly studied microbiological composition (fungi, bacteria, arbuscular mycorrhizas). The comparative analysis between the properties from shallower (newer) and deeper (older) soil strata indicates that, while soil composition exhibits depth dependence, the pyrogenic black carbon structure does not. This finding suggests that this model material should be reproducible by repeating the pyrolysis conditions utilized in their production.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil and Tillage Research - Volume 155, January 2016, Pages 298–307
نویسندگان
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