Amino sugars in arctic soils
文献类型：期刊论文
| 作者 | Dai, XY; Ping, CL; Hines, ME; Zhang, XD; Zech, W; Dai, XY, Univ Wisconsin, Dept Soil Sci, 1525 Observ Dr, Madison, WI 53706 USA |
| 刊名 | COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
 |
| 出版日期 | 2002 |
| 卷号 | 33期号:5-6页码:789-805 |
| ISSN号 | 0010-3624 |
| 英文摘要 | Amino sugars in soils are assumed to be of microbial origin. Their levels in soil, can provide insights into the microbial contribution to soil organic matter (SOM) and might serve as an indicator of SOM quality. Four amino sugars, glucosamine, galactosamine, mannosamine, and muramic acid were determined by gas chromatography in five soils from the tundra Alaska before and after incubation for 4 months at 4 and 25degreesC. Glucosamine and muramic acid analyses were utilized to represent fungal biomass and bacterial biomass, respectively. Total amino sugar N represented 0.8 to 3.3% of the total soil N in these five tundra soils, and the proportion of soil N as amino sugars increased with depth. Total amino sugar and fungal glucosamine N increased or remained constant during incubation at 4 and 25degreesC (except site 3 Cf horizon which decreased after incubation at 4degreesC), suggesting that total microbial biomass and fungal biomass increased. Bacterial biomass had an increase after incubation at 4degreesC, and a relative decrease at 25degreesC (except for Cf horizon). Fungal glucosamine to muramic acid ratios demonstrated that fungal biomass increased faster than bacterial biomass at 25degreesC, and slower at 4degreesC, indicating that at higher temperature, fungi dominated the microbial biomass in the soils studied. The mechanisms involved in the accumulation and decomposition of amino sugars in soil during incubation were not clear. No correlations were observed between the amino sugar contents and CO2 evolution during incubation, indicating that amino sugar abundance may not be an indicator of the bioavailability of SOM in soils. However, they can provide insights into the microbial contribution to SOM. |
| 学科主题 | Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science |
| 语种 | 英语 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55493]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Dai, XY, Univ Wisconsin, Dept Soil Sci, 1525 Observ Dr, Madison, WI 53706 USA |
| 推荐引用方式 GB/T 7714 | Dai, XY,Ping, CL,Hines, ME,et al. Amino sugars in arctic soils[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2002,33(5-6):789-805. |
| APA | Dai, XY,Ping, CL,Hines, ME,Zhang, XD,Zech, W,&Dai, XY, Univ Wisconsin, Dept Soil Sci, 1525 Observ Dr, Madison, WI 53706 USA.(2002).Amino sugars in arctic soils.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,33(5-6),789-805. |
| MLA | Dai, XY,et al."Amino sugars in arctic soils".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 33.5-6(2002):789-805. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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