Thermal stability of soil organic matter was affected by 23-yr maize and soybean continuous cultivation in northeast of China
文献类型：期刊论文
| 作者 | S. J. Miao, Y. F. Qiao, M. Y. You and F. T. Zhang |
| 刊名 | Journal of Thermal Analysis and Calorimetry
 |
| 出版日期 | 2016 |
| 卷号 | 123期号:3页码:2045-2051 |
| 通讯作者 | 乔云发 |
| 中文摘要 | Long-term continuous cropping affects the biochemical quality of soil organic matter (SOM), but whether the effects are relevant with their thermal stability is less clear. In northeast China, long-term continuous cropping occurred frequently owing to higher yield and economic interest requirement. To verify the thermal stability properties of SOM affected by the long-term continuous cropping, the study focused on 23-yr continuous cultivated maize and soybean plots, where the effect of cropping is likely to be detected. Bulk soils sampled in 1991 and 2014 were studied by thermogravimetry and differential scanning calorimetry (DSC). The results showed typical bimodal peaks in DSC curve in bulk Mollisols. A labile fraction peak was observed at 354-366 A degrees C low-temperature zone and recalcitrant fraction one at high temperature of 430-438 A degrees C. Energy density (J mg(-1) OM) was greater in soybean plots compared to maize plots; in contrast, long-term continuous maize cultivation also increased energy density, in reverse in soybean plots after 23-yr cultivation. The DSC-T-50, temperature at which half of energy release occurred, typically showed larger responses to long-term cultivation than crop species. Results obtained support the hypothesis of a potential link between long-term continuous cropping and the thermal stability of SOM, and a correlation with crop species. |
| 源URL | [http://159.226.123.10/handle/131322/7099]  |
| 专题 | 东北地理与农业生态研究所_湿地生态系统管理学科组 |
| 推荐引用方式 GB/T 7714 | S. J. Miao, Y. F. Qiao, M. Y. You and F. T. Zhang. Thermal stability of soil organic matter was affected by 23-yr maize and soybean continuous cultivation in northeast of China[J]. Journal of Thermal Analysis and Calorimetry,2016,123(3):2045-2051. |
| APA | S. J. Miao, Y. F. Qiao, M. Y. You and F. T. Zhang.(2016).Thermal stability of soil organic matter was affected by 23-yr maize and soybean continuous cultivation in northeast of China.Journal of Thermal Analysis and Calorimetry,123(3),2045-2051. |
| MLA | S. J. Miao, Y. F. Qiao, M. Y. You and F. T. Zhang."Thermal stability of soil organic matter was affected by 23-yr maize and soybean continuous cultivation in northeast of China".Journal of Thermal Analysis and Calorimetry 123.3(2016):2045-2051. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
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