Chemical and spectroscopic characteristics of humic acid from a clay loam soil in Ontario after 52 years of consistent fertilization and crop rotation
文献类型：期刊论文
| 作者 | Zhao, Nan; Yang, Xixiang; Huang, Guocheng; Lu, Yizhong; Zhang, Jing ; Fan, Yuanyuan; Drury, Craig F.; Yang, Xueming
|
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2021-02 |
| 卷号 | 31期号:1页码:204-213 |
| ISSN号 | 1002-0160 |
| 关键词 | corn humification process infrared spectroscopy Kentucky bluegrass sod molecular composition soil organic C |
| 英文摘要 | Long-term fertilization and crop rotation can influence both organic C sequestration as well as the C composition of soils and the more resistant organic C compounds contained in humic acid (HA). This study examined the effects of fertilization and cropping type (monoculture corn (MC) and Kentucky bluegrass sod (KBS) and corn-oat-alfalfa-alfalfa rotation (RC)) on the HA composition of soil from a 52-year field study in southern Ontario, Canada. Humic acid samples were extracted from soil, and elemental analysis, infrared spectroscopy, solid state C-13 nuclear magnetic resonance spectra, and electron paramagnetic resonance methods were used to determine the influence of the cropping type on the characteristics of HA. Both fertilization and cropping type affected the chemical characteristics of HA. Fertilization led to a 5.9% increase in C, a 7.6% decrease in O, and lower O/C and (N + O)/C ratios in HA as compared to the corresponding non-fertilized treatments. Rotation resulted in a lower proportion of C (48.1%) and a greater (N + O)/C ratio (0.7) relative to monoculture cropping. Infrared spectroscopy analysis showed that HA contained more C-O groups in fertilized soil than in non-fertilized soil under MC and KBS. Fertilization increased the O-alkyl-C, phenolic-C, and free radical contents of HA relative to non-fertilization treatments. Rotation decreased the aliphatic and carboxyl groups and increased the O-alkyl, carbohydrate, aryl, and phenolic groups and free radicals, relative to MC and KBS. Both long-term crop rotation and fertilization dramatically modified the soil HA composition. Significant relationships were observed between the molecular composition of HA and soil organic C. Hence, humic acid characterization could be used as an indicator of the long-term sustainability of crop management practices. |
| WOS研究方向 | Soil Science |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45882]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 作者单位 | 1.South China Normal Univ, Sch Chem, Guangzhou Key Lab Analyt Chem Biomed, Guangzhou 510006, Peoples R China 2.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China 3.Agr & Agri Food Canada, Harrow Res & Dev Ctr, Harrow, ON N0R 1G0, Canada 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China 5.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Nan,Yang, Xixiang,Huang, Guocheng,et al. Chemical and spectroscopic characteristics of humic acid from a clay loam soil in Ontario after 52 years of consistent fertilization and crop rotation[J]. PEDOSPHERE,2021,31(1):204-213. |
| APA | Zhao, Nan.,Yang, Xixiang.,Huang, Guocheng.,Lu, Yizhong.,Zhang, Jing.,...&Yang, Xueming.(2021).Chemical and spectroscopic characteristics of humic acid from a clay loam soil in Ontario after 52 years of consistent fertilization and crop rotation.PEDOSPHERE,31(1),204-213. |
| MLA | Zhao, Nan,et al."Chemical and spectroscopic characteristics of humic acid from a clay loam soil in Ontario after 52 years of consistent fertilization and crop rotation".PEDOSPHERE 31.1(2021):204-213. |
入库方式： OAI收割
来源：生态环境研究中心
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