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Dynamics and distribution of C-13-labeled straw carbon by microorganisms as affected by soil fertility levels in the Black Soil region of Northeast China

文献类型：期刊论文

作者Pei, Jiubo3; An, Tingting3; Schaeffer, Sean1; Zhuang, Jie1,2; Radosevich, Mark1; Li, Shuangyi3; Li, Hui3; Wang, Jingkuan3
刊名BIOLOGY AND FERTILITY OF SOILS
出版日期2015-07-01
卷号51期号:5页码:605-613
关键词Residue c Soil Organic c Microbial Biomass c Soil Fertility Stable Isotope
ISSN号0178-2762
DOI10.1007/s00374-015-1006-3
英文摘要Microorganisms mediate the decomposition of straw residue in soil, but how soil fertility levels affect microbial incorporation of straw C remains unclear in many ecosystems. The objectives of this study were to quantify the contribution of straw C to microbial organic C (MBC), and to evaluate the effect of different soil fertility levels on the distribution of straw-derived soil organic C (SOC) pools. An in situ incubation was set up with soils amended with or without C-13-labeled maize straw. Across fertility treatments, straw C retained in soil decreased, on average, from 84 % after 30 days (June 5, 2011) to 30 % after 365 days (May 5, 2012). Over the entire incubation, 2-5 % of straw C was incorporated to MBC. At the high and medium fertility levels, MBC contained, on average, 58 % of straw C and 42 % of native SOC, respectively, whereas more than 75 % of MBC was derived from straw C at the low fertility level. Total MBC was lower in soil at the low fertility level compared with soils at the high and medium fertility levels. These results suggest that in low fertility soils, the addition of crop straw significantly promoted the activity and growth of soil microorganisms and provided a potential positive feedback to soil fertility.
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000355865200009
出版者SPRINGER
源URL[http://210.72.129.5/handle/321005/122061]  
专题中国科学院沈阳应用生态研究所
通讯作者Wang, Jingkuan
作者单位1.Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN 37996 USA
2.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
3.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Liaoning Provin, Peoples R China
推荐引用方式
GB/T 7714		 Pei, Jiubo,An, Tingting,Schaeffer, Sean,et al. Dynamics and distribution of C-13-labeled straw carbon by microorganisms as affected by soil fertility levels in the Black Soil region of Northeast China[J]. BIOLOGY AND FERTILITY OF SOILS,2015,51(5):605-613.
APA Pei, Jiubo.,An, Tingting.,Schaeffer, Sean.,Zhuang, Jie.,Radosevich, Mark.,...&Wang, Jingkuan.(2015).Dynamics and distribution of C-13-labeled straw carbon by microorganisms as affected by soil fertility levels in the Black Soil region of Northeast China.BIOLOGY AND FERTILITY OF SOILS,51(5),605-613.
MLA Pei, Jiubo,et al."Dynamics and distribution of C-13-labeled straw carbon by microorganisms as affected by soil fertility levels in the Black Soil region of Northeast China".BIOLOGY AND FERTILITY OF SOILS 51.5(2015):605-613.

入库方式： OAI收割

来源：沈阳应用生态研究所

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