Chemical Composition of Plant Residues Regulates Soil Organic Carbon Turnover in Typical Soils with Contrasting Textures in Northeast China Plain
文献类型：期刊论文
| 作者 | Liu, Siyi ; Li, Jiangye; Liang, Aizhen; Duan, Yan; Chen, Haibin; Yu, Zhuyun; Fan, Ruqin; Liu, Haiyang; Pan, Hong
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| 刊名 | AGRONOMY-BASEL
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| 出版日期 | 2022-03 |
| 卷号 | 12期号:3页码:747 |
| 关键词 | MICROBIAL COMMUNITY STRUCTURE DECOMPOSITION DYNAMICS N MINERALIZATION SIZE FRACTIONS NITROGEN QUALITY LITTER MATTER ROOT CHEMISTRY |
| 英文摘要 | Soil organic carbon (SOC) turnover plays a pivotal role in achieving C neutrality, promoting C retention and increasing soil fertility. Residue biochemistry and soil texture essentially determine SOC distribution (including CO2 mineralization and stock in soil) in farmland. However, less is known about allocation of residue-C with contrasting biochemistry and the fate of residue-C in soil under two different textures. This study was conducted in a 61-day aerobic incubation with two Black soils with distinct texture (clay loam vs. sandy loam) in Northeast China. Chemical composition of seven residue parts (soybean roots, leaves, and stems and maize roots, leaves and top and bottom stem parts) was characterized using solid-state 13C nuclear magnetic resonance spectroscopy. The results showed that leaves of both two crops contained significantly higher nitrogen (N), carbonyl and aryl concentrations and lower carbon (C) and lignin concentrations than other parts, resulted in faster decomposition in soils, especially in the clay loam. Stems contained higher O-alkyl and di-O-alkyl concentrations, C/N and lignin/N, while roots contained higher aromaticity. Maize top stem parts with larger slow C pool and longer half-life had higher contribution to SOC accumulation than other parts. Soil textures also induced great impact on SOC turnover. The clay loam favored SOC sequestration due to significantly longer half-life of slow C pool than the sandy loam. Generally, the alkyl/O-alkyl ratio showed the most significant correlation with SOC, CO2 emission and soil biochemical factors in the clay loam; whereas in sandy loam, the lignin/N was the pivotal indicator for SOC accumulation. This study provides insights into the differences in chemical composition among various residue parts, and highlights the significant effects of both residue chemical composition and soil texture on residue decomposition and SOC accumulation. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47213]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Fan, Ruqin |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Zhongkai Univ Agr & Engn, Coll Resources & Environm, Guangzhou 510225, Peoples R China 3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China 4.China Minist Agr Key Lab Yangtze River Plain Agr, Nanjing 210014, Peoples R China 5.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Siyi,Li, Jiangye,Liang, Aizhen,et al. Chemical Composition of Plant Residues Regulates Soil Organic Carbon Turnover in Typical Soils with Contrasting Textures in Northeast China Plain[J]. AGRONOMY-BASEL,2022,12(3):747. |
| APA | Liu, Siyi.,Li, Jiangye.,Liang, Aizhen.,Duan, Yan.,Chen, Haibin.,...&Pan, Hong.(2022).Chemical Composition of Plant Residues Regulates Soil Organic Carbon Turnover in Typical Soils with Contrasting Textures in Northeast China Plain.AGRONOMY-BASEL,12(3),747. |
| MLA | Liu, Siyi,et al."Chemical Composition of Plant Residues Regulates Soil Organic Carbon Turnover in Typical Soils with Contrasting Textures in Northeast China Plain".AGRONOMY-BASEL 12.3(2022):747. |
入库方式： OAI收割
来源：生态环境研究中心
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