Long-term effects of gravel-sand mulch on soil organic carbon and nitrogen in the Loess Plateau of northwestern China (SCI)
文献类型：期刊论文
| 作者 | Qiu Y.; Xie Z. K.; Wang Y. J.; Malhi S. S.; Ren J. L. |
| 刊名 | Journal of Arid Land
 |
| 出版日期 | 2015 |
| 卷号 | 7期号:1页码:46-53 |
| 英文摘要 | Gravel-sand mulch has been used for centuries to conserve water in the Loess Plateau of northwestern China. In this study, we assessed the influence of long-term (1996-2012) gravel-sand mulching of cultivated soils on total organic carbon (TOC), light fraction organic carbon (LFOC), microbial biomass carbon (MBC), total organic nitrogen (TON), particulate organic carbon (POC), mineral-associated organic carbon (MOC), permanganate-oxidizable carbon (KMnO4-C), and non-KMnO4-C at 0-60 cm depths. Mulching durations were 7, 11 and 16 years, with a non-mulched control. Compared to the control, there was no significant and consistently positive effect of the mulch on TOC, POC, MOC, KMnO4-C and non-KMnO4-C before 11 years of mulching, and these organic C fractions generally decreased significantly by 16 years. LFOC, TON and MBC to at a 0-20 cm depth increased with increasing mulching duration until 11 years, and then these fractions decreased significantly between 11 and 16 years, reaching values comparable to or lower than those in the control. KMnO4-C was most strongly correlated with the labile soil C fractions. Our findings suggest that although gravel-sand mulch may conserve soil moisture, it may also lead to long-term decreases in labile soil organic C fractions and total organic N in the study area. The addition of manure or composted manure would be a good choice to reverse the soil deterioration that occurs after 11 years by increasing the inputs of organic matter. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27541]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Qiu Y.,Xie Z. K.,Wang Y. J.,et al. Long-term effects of gravel-sand mulch on soil organic carbon and nitrogen in the Loess Plateau of northwestern China (SCI)[J]. Journal of Arid Land,2015,7(1):46-53. |
| APA | Qiu Y.,Xie Z. K.,Wang Y. J.,Malhi S. S.,&Ren J. L..(2015).Long-term effects of gravel-sand mulch on soil organic carbon and nitrogen in the Loess Plateau of northwestern China (SCI).Journal of Arid Land,7(1),46-53. |
| MLA | Qiu Y.,et al."Long-term effects of gravel-sand mulch on soil organic carbon and nitrogen in the Loess Plateau of northwestern China (SCI)".Journal of Arid Land 7.1(2015):46-53. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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