کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8365174 | 1542617 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimating the critical N:C from litter decomposition data and its relation to soil organic matter stoichiometry
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش خاک شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Estimating the critical N:C from litter decomposition data and its relation to soil organic matter stoichiometry Estimating the critical N:C from litter decomposition data and its relation to soil organic matter stoichiometry](/preview/png/8365174.png)
چکیده انگلیسی
Carbon (C) and nitrogen (N) interact strongly during decomposition of litters with repercussions for stoichiometry of soil organic matter (SOM). A characteristic parameter describing this interaction is the critical N:C ratio, rc, i.e. the litter N:C ratio at which net N mineralisation commences. We show here how rc can be estimated from time series of decomposition and use four large data bases to investigate how environment and litter properties determine rc. We find that rc increases with increasing initial litter N:C and N fertilisation. The critical N:C responds also to large scale variations in environment but it is not clear which environmental variable drives this variability. With increasing rc we find an increase in SOM N:C. SOM N:C increases more rapidly than rc, which can be explained if the decrease in substrate quality during decomposition is taken into account.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 67, December 2013, Pages 312-318
Journal: Soil Biology and Biochemistry - Volume 67, December 2013, Pages 312-318
نویسندگان
G.I. Ã
gren, R. Hyvönen, S.L. Berglund, S.E. Hobbie,