Light fraction carbon and water-stable aggregates in black soils
文献类型：期刊论文
| 作者 | Shi, Y; Chen, X; Shen, SM; Shi, Y, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terrestrial Ecol Proc, Shenyang 110016, Peoples R China |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2007 |
| 卷号 | 17期号:1页码:97-100 |
| 关键词 | Black Soil Light Fraction Carbon Water-stable Aggregates |
| ISSN号 | 1002-0160 |
| 英文摘要 | The distribution of light fraction carbon (LF-C) in the various size classes of aggregates and its relationship to water-stable aggregates as well as the influence of cultivation on the organic components in virgin and cultivated black soils were studied by wet sieving and density separation methods. The total organic carbon (TOC) and LF-C were significantly higher (P <= 0.05) in the virgin soils than in the cultivated soils. The LF-C in aggregates of different size classes varied from 0.9 to 2.5 g kg(-1) in the cultivated soils and from 2.5 to 7.1 g kg(-1) in the virgin soils, whereas the ratio of LF-C to TOC varied from 1.9% to 7.3% and from 5.0% to 12.2%, respectively. After being incubated under constant temperature and controlled humidity for three months, the contribution of LF-C to TOC sharply decreased to an amount (1.7%-8.5%) close to the level in soils that had been cultivated for 20 to 25 years (1.3%-8.8%). As a result, the larger water-stable macro-aggregates (especially > 1 mm) decreased sharply, indicating that the LF-C pool in virgin soils declined quickly after cultivation, which reduced the water stability of soil aggregates. |
| 学科主题 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000245046200013 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54743]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Shi, Y, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terrestrial Ecol Proc, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Y,Chen, X,Shen, SM,et al. Light fraction carbon and water-stable aggregates in black soils[J]. PEDOSPHERE,2007,17(1):97-100. |
| APA | Shi, Y,Chen, X,Shen, SM,&Shi, Y, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terrestrial Ecol Proc, Shenyang 110016, Peoples R China.(2007).Light fraction carbon and water-stable aggregates in black soils.PEDOSPHERE,17(1),97-100. |
| MLA | Shi, Y,et al."Light fraction carbon and water-stable aggregates in black soils".PEDOSPHERE 17.1(2007):97-100. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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