Appropriate N addition improves soil aggregate stability through AMF and glomalin-related soil proteins in a semiarid agroecosystem
文献类型：期刊论文
| 作者 | Zhang, Yu2,3,4; Dong, Lingbo1; Shangguan, Zhouping2,3,4 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2022-10-29 |
| 页码 | 13 |
| 关键词 | AMF glomalin N addition soil aggregate stability soil organic carbon |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.4488 |
| 通讯作者 | Shangguan, Zhouping(shangguan@ms.iswc.ac.cn) |
| 英文摘要 | Soil aggregation and structural stability play a crucial role in soil organic carbon (SOC) sequestration. However, the underlying mechanisms of arbuscular mycorrhizal fungi (AMF) and glomalin-related soil protein (GRSP) responses to N addition and their impacts on soil aggregation and organic carbon stability remain unclear. Hence, a 16-year field N addition experiment on winter wheat (Triticum aestivum L.) was conducted to investigate the effects on the stability of soil structure and SOC fractions via AMF and GRSP. Overall, N addition increased the soil aggregate mean weight diameter (MWD), which exhibited an increase in the proportion of large macroaggregates and a decrease in the proportion of silt-clay fractions. Appropriate N (180 kg N ha(-1)) input increased SOC stability and total SOC stock, while excessive N (360 kg N ha(-1)) input increased labile organic carbon fractions, and active C index and decreased the C stock. The concentrations of SOC, total GRSP (T-GRSP), and easily extractable GRSP (EE-GRSP) showed the largest increases in small macroaggregates, and GRSP was significantly correlated with SOC, recalcitrant organic carbon, and MWD (p < 0.05). These results indicated that appropriate N addition promoted AMF to secrete GRSP, which in turn favoured large macroaggregation and enhanced the physical protection of SOC. Meanwhile, the increased GRSP stimulated the accumulation of recalcitrant C, thus improving soil organic carbon stability and carbon sequestration capacity. The study suggested that appropriate N addition (180 kg N ha(-1)) should be used to improve the carbon sequestration potential of farmland on the Loess Plateau. |
| WOS关键词 | ARBUSCULAR MYCORRHIZAL FUNGI ; MICROBIAL COMMUNITY STRUCTURE ; ELEVATED ATMOSPHERIC CO2 ; ORGANIC-CARBON FRACTIONS ; NITROGEN ADDITION ; POOLS ; SEQUESTRATION ; DYNAMICS ; MATTER ; FOREST |
| 资助项目 | National Natural Science Foundation of China[42077452] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070201] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000875695900001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/186179]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shangguan, Zhouping |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci & Minist Educ, Res Ctr Soil & Water Conservat & Ecol Environm, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yu,Dong, Lingbo,Shangguan, Zhouping. Appropriate N addition improves soil aggregate stability through AMF and glomalin-related soil proteins in a semiarid agroecosystem[J]. LAND DEGRADATION & DEVELOPMENT,2022:13. |
| APA | Zhang, Yu,Dong, Lingbo,&Shangguan, Zhouping.(2022).Appropriate N addition improves soil aggregate stability through AMF and glomalin-related soil proteins in a semiarid agroecosystem.LAND DEGRADATION & DEVELOPMENT,13. |
| MLA | Zhang, Yu,et al."Appropriate N addition improves soil aggregate stability through AMF and glomalin-related soil proteins in a semiarid agroecosystem".LAND DEGRADATION & DEVELOPMENT (2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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