Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China
文献类型：期刊论文
| 作者 | Zhang, Rongqin3; Li, Ming3; Gao, Xiaodong1; Duan, Yumin3; Cai, Yaohui1; Li, Huike2,3; Zhao, Xining1; Wang, Yanping2,3 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2022-09-20 |
| 页码 | 18 |
| 关键词 | Inter-planting Dissolved organic matter EEM-PARAFAC Fluorescence intensity Orchard |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-022-05697-7 |
| 通讯作者 | Zhao, Xining(zxn@nwsuaf.edu.cn) ; Wang, Yanping(ylwangyp@163.com) |
| 英文摘要 | Purpose Dissolved organic matter (DOM) plays a key role in agroecosystems' carbon cycling. However, the DOM evolutionary signatures and the timing of equilibrium being achieved in dryland inter-planting systems remain unclear. This study aimed to determine the characteristics of DOM dynamics using a three-dimensional fluorescence excitation-emission matrix combined with parallel factor analysis (EEMs-PARAFAC). Methods DOM contents, different related components accumulation were assessed using clear tillage (CT) as the control, white clover (Trifolium repens L.) of three different ages (4, 8, 12 years), representing a chronosequence, in apple orchards on the Loess Plateau. Results At a depth of 0-10 cm, DOM concentration decreased with depth and significantly increased with longer inter-planting, and the five fluorescence components contents of soil DOM showed a similar trend. Moreover, the relative abundances of humic-like (C2, C3) was higher than CT, but the protein-like was lower. The ultraviolet-visible spectral and optical indices indicated that DOM mainly originated from mixed sources, and gradually tended towards greater DOM molecular complexity with increasing time since sowing. Microbial biomass nitrogen and soil organic carbon (SOC) were the most important two factors affecting DOM over time, contributing to 87% and 77% of the total variation. Conclusions This study demonstrated that inter-planting time and soil depth played important roles in determining DOM content and component accumulation. Overall, inter-planting with white clover in orchards can effectively improve the accumulation of macro-molecular humic-like DOM, which probably promotes SOC storage. Long-term experiments are required exploring DOM dynamics and the timing of equilibrium being reached. |
| WOS关键词 | LAND-USE ; MICROBIAL ACTIVITY ; FLUORESCENCE ; DYNAMICS ; NITROGEN ; CARBON ; PRODUCTIVITY ; EXTRACTION ; PROFILES ; QUALITY |
| 资助项目 | National Natural Science Foundation of China (NSFC) |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000855649200001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/184677]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhao, Xining; Wang, Yanping |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Minist Agr, Key Lab Plant Nutr & Agrienvironm Northwest China, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Rongqin,Li, Ming,Gao, Xiaodong,et al. Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China[J]. PLANT AND SOIL,2022:18. |
| APA | Zhang, Rongqin.,Li, Ming.,Gao, Xiaodong.,Duan, Yumin.,Cai, Yaohui.,...&Wang, Yanping.(2022).Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China.PLANT AND SOIL,18. |
| MLA | Zhang, Rongqin,et al."Changes in the characteristics of soil dissolved organic matter over time since inter-planting with white clover (Trifolium repens L.) in apple orchards on the Loess Plateau in China".PLANT AND SOIL (2022):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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