کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9490624 | 1629582 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Iron-related phosphorus in eroded sediments from agricultural soils of Mediterranean areas
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Iron-related phosphorus in eroded sediments from agricultural soils of Mediterranean areas Iron-related phosphorus in eroded sediments from agricultural soils of Mediterranean areas](/preview/png/9490624.png)
چکیده انگلیسی
The ratio of Feca to Fecbd was higher at low sediment charge in runoff. The mean P/Fe mole ratio in citrate ascorbate extracts (essentially dissolves poorly crystalline Fe oxides) was higher in soils (0.068±0.056) than in sediments (0.022±0.009); in citrate bicarbonate dithionite extracts (dissolves oxides not reduced by citrate ascorbate), it was the same for soils and sediments (0.01). This indicates that poorly crystalline oxides with low P contents are preferentially eroded. The concentration of P fractions associated to Fe oxides in sediments decreased at increased sediment concentration in runoff, due to a decrease in Fe (ca and cbd extractable) with increasing sediment concentration in runoff.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 125, Issues 1â2, March 2005, Pages 1-9
Journal: Geoderma - Volume 125, Issues 1â2, March 2005, Pages 1-9
نویسندگان
Concepción Saavedra, Antonio Delgado,