Isotopic (13C) fractionation during plant residue decomposition and its implications for soil organic matter studies
نویسندگان
چکیده
منابع مشابه
Isotopic ((13)C) fractionation during plant residue decomposition and its implications for soil organic matter studies.
Carbon isotopic fractionations in plant materials and those occurring during decomposition have direct implications in studies of short-and longer-term soil organic matter dynamics. Thus the products of decomposition, the evolved CO(2) and the newly formed soil organic matter, may vary in their (13)C signature from that of the original plant material. To evaluate the importance of such fraction...
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Decomposition of soil organic matter (SOM) plays an important role in the global carbon cycle because the CO2 emitted from soil respiration is an important source of atmospheric CO2. Carbon isotopic fractionation occurs during SOM decomposition, which leads to (12)C to enrich in the released CO2 while (13)C to enrich in the residual SOM. Understanding the isotope fractionation has been demonstr...
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An understanding of the form and function of SOM in soil is essential to sustainable crop production. Various methods of SOM fractionation are used to study SOM forms and to gain an understanding of interaction between SOM and aggregate formation. Physical SOM fractionation techniques are based on the concept that SOM associated with particles of various sizes. differs in structure and function...
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7 [1] Soil organic matter (SOM) is a primary reservoir of terrestrial sulfur (S), but its role in 8 the global S cycle remains poorly understood. We examine S speciation by X-ray 9 absorption near-edge structure (XANES) spectroscopy to describe S species behavior 10 during SOM decomposition. Sulfur species in SOM were best represented by organic 11 sulfide, sulfoxide, sulfonate, and sulfate. Th...
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ژورنال
عنوان ژورنال: Rapid Communications in Mass Spectrometry
سال: 1999
ISSN: 0951-4198,1097-0231
DOI: 10.1002/(sici)1097-0231(19990715)13:13<1284::aid-rcm578>3.3.co;2-s