Long-term decomposition of organic materials with different carbon/nitrogen ratios
文献类型：期刊论文
| 作者 | Chen, X; Cabrera, ML; Zhang, L; Shi, Y; Shen, SM; Cabrera, ML, Univ Georgia, Dept Crop & Soil Sci, Athens, GA 30602 USA |
| 刊名 | COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
 |
| 出版日期 | 2003 |
| 卷号 | 34期号:1-2页码:41-54 |
| 关键词 | Decomposition Carbon Nitrogen C/n Ratio |
| ISSN号 | 0010-3624 |
| 英文摘要 | Quantitative information on the decomposition rates and patterns of organic residues is fundamental for a better understanding of organic matter dynamics and nutrient cycling in soils. A laboratory incubation experiment was conducted under constant temperature (30degreesC) for 3 years to study changes in total carbon (C), total nitrogen (N), and C/N ratio of crop residues (rice, corn, alfalfa) and animal feces (pig, cattle) decomposing with and without soil. On average, rice, corn, and alfalfa residues lost a larger proportion of their original organic C than cattle and pig feces (82 vs. 70%). The presence of soil did not affect the total amount of organic C lost, with the exception of corn residues in which it increased it from 79 to 84%. Alfalfa residues, pig feces, and cattle feces lost a larger proportion of their total N than rice residues (38 vs. 15%). Both rice and corn residues showed an initial increase in total N, which may have been due to N immobilization from the soil and/or N fixation. Rice residues started losing total N after 15 months, whereas corn residues still showed an increase in total N after three years. The presence of soil decreased the loss of total N in alfalfa residue (32 vs. 48%) and pig feces (38 vs. 51%). The C/N ratios of all materials decreased during the decomposition and, with the exception of pig feces were similar to that of the soil by the end of the study (11: 1 to 12: 1). These results provide quantitative information that could be used to improve the management of residues and feces. |
| 学科主题 | Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000181477500005 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55413]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Cabrera, ML, Univ Georgia, Dept Crop & Soil Sci, Athens, GA 30602 USA |
| 推荐引用方式 GB/T 7714 | Chen, X,Cabrera, ML,Zhang, L,et al. Long-term decomposition of organic materials with different carbon/nitrogen ratios[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2003,34(1-2):41-54. |
| APA | Chen, X,Cabrera, ML,Zhang, L,Shi, Y,Shen, SM,&Cabrera, ML, Univ Georgia, Dept Crop & Soil Sci, Athens, GA 30602 USA.(2003).Long-term decomposition of organic materials with different carbon/nitrogen ratios.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,34(1-2),41-54. |
| MLA | Chen, X,et al."Long-term decomposition of organic materials with different carbon/nitrogen ratios".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 34.1-2(2003):41-54. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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