Residue-Derived Amino Sugar Formation and Its Carbon Use Efficiency

摘要：

　　A 21-day lab incubation experiment was carried out with arable soil and uniform 13C-labeled wheat residues.Residue-derived amino sugars (ASR) accumulated exponentially,and were fitted with a first-order model Ct=CMax(1-e-kd) well.Their maxima were 88 to 381 nmol g-1 for glucosamine (GluNR),52-105 nmol g-1 for galactosamine (GalNR),and 107-137 nmol g-1 for muramic acid (MurNR),respectively.Their half-lives (T1/2) separately varied between 1.2-3.3 d for GluNR,1.6-4.7 d for GaiNs,and less than 0.3 d for MurNR.A close relationship was observed between carbon mineralization and ASR (P<0.05),and carbon use efficiency of cumulative ASR was calculated and compared.

关键词： Amino sugar Carbon use efficiency Organic residue Carbon-13 LC-c-IRMS

作者: Zhen Bai Samuel Bodé Pascal Boeckx Xudong Zhang

作者单位: State Key Laboratory of Forest and Soil Ecology,Institute of Applied Ecology,Chinese Academy of Scie Laboratory of Applied Physical Chemistry(ISOFYS),Ghent 9000,Belgium State Key Laboratory of Forest and Soil Ecology,Institute of Applied Ecology,Chinese Academy of Scie

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 69-71

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）