کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8894218 | 1629401 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Coupled effect of temperature and mineral additions facilitates decay of aspen bark
ترجمه فارسی عنوان
اثر متقابل دما و مواد معدنی باعث کاهش فساد پوست کنده می
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کلمات کلیدی
DECRSBSCWDCelLIG - LIGACoarse woody debris - آوار درشت چوبDecomposition - تجزیهBiochemical composition - ترکیب بیوشیمیاییTurnover time - زمان گردشCellulose - سلولزPhosphorous - فسفرLignin - لیگنینDecay rate - نرخ انبساطNitrogen - نیتروژنHalf-life period - نیمه عمر دورهTree bark - پوست درختdecay constant - پوسیدگی ثابتCarbon - کربن
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
Mineral N and P additions decreased the C:N and increased the Lignin : Cellulose ratios during the long-term incubation of aspen bark and caused a considerable increase in the DecR, k values, TotL-C values, and consequently a decrease of the turnover time. The maximal values of TotL-C were attributed to the SBS-NP treatment at 22 °С and comprised 72% of the initial C content in bark. The turnover time of soil-bark substrates varied from 2 to 7.3 years depending on the treatment and temperature. The increase of the incubation temperature from 2 to 12 °C and from 12 to 22 °C caused a similar effect on the DecR over 12 months of the experiment, and the Q10 in different treatments varied negligibly: from 1.21 to 1.37. The temperature effect was most significant only during the first 1-2 months of experiment, explaining ca. 83% of the mean DecR variance whereas the 'Treatment' factor was attributed for 76-83% of the mean DecR variance in later stages (3-12 months) of decay of aspen bark. A close relationship between the Lig:Cel ratio and DecR was observed during 1-2 months of incubation. We conclude that the effect of mineral additions on the decay rate of aspen bark is more important than the effect of temperature. The coupled effect of N and P additions was more pronounced than the effect of N addition alone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 316, 15 April 2018, Pages 27-37
Journal: Geoderma - Volume 316, 15 April 2018, Pages 27-37
نویسندگان
Irina Kurganova, Valentin Lopes de Gerenyu, Natalia Galibina, Ekaterina Kapitsa, Ekaterina Shorohova,