Soil organic carbon priming co-regulated by labile carbon input level and long-term fertilization history
文献类型：期刊论文
| 作者 | Wu, Lei5; Wang, Jun5; Xu, Hu5; Xu, Xinliang3,4; Gao, Hongjun2; Xu, Minggang5; Zhang, Wenju1,5 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 902页码:10 |
| 关键词 | Priming effect Long-term fertilization Carbon input level Aggregate distribution Nutrient availability |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.166175 |
| 通讯作者 | Zhang, Wenju(zhangwenju01@caas.cn) |
| 英文摘要 | Labile carbon (C) input and fertilization have important consequences for soil organic matter (SOM) decomposition via the priming effect (PE), thereby impacting soil fertility and C sequestration. However, it remains largely uncertain on how the labile C input levels interact with long-term fertilization history to control PE intensity. To clarify this question, soil samples were collected from a 38-year fertilization field experiment (including five treatments: chemical nitrogen fertilizer, N; chemical fertilizer, NPK; manure, M-1; 200 % manure, M-2; NPK plus M-2, NPKM2), with strongly altered soil physiochemical properties (i.e., soil aggregation, organic C and nutrient availability). These soil samples were incubated with three input levels of C-13-glucose (without glucose, control; low, 0.4 % SOC; high, 2.0 % SOC) to clarify the underlying mechanisms of PE. Results showed that the PE significantly increased with glucose input levels, with values increasing from negative or weak (-2.21 to 3.55 mg C g(-1) SOC) at low input level to strongly positive (5.62 to 8.57 mg C g(-1) SOC) at high input level across fertilization treatments. The increased PE intensity occurred along with decreased dissolved total nitrogen (DTN) contents and increased ratios of dissolved organic C to DTN, implying that the decline in N availability largely increased PE via enhanced microbial N mining from SOM. Compared to N and NPK treatments, the PE was significantly lower in the manure-amendment treatments, especially for low input level, due to more stable SOM by aggregate protection and higher N and phosphorus availability. These results suggested that manure application could alleviate SOM priming via increased soil C stability and nutrient availability. Collectively, our findings emphasize the importance of long-term fertilization-driven changes in labile C inputs, SOM stability, and nutrient availability in regulating PE and soil C dynamics. This knowledge advances our understanding of the long-term fertilization management for soil C sequestration. |
| WOS关键词 | RESIDUE DECOMPOSITION ; MICROBIAL BIOMASS ; MATTER ; SEQUESTRATION ; AVAILABILITY ; MECHANISMS ; MINERALIZATION ; MICROORGANISMS ; AGGREGATION ; FUMIGATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001159382500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/202838]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Wenju |
| 作者单位 | 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, 12 South Rd, Beijing 100081, Peoples R China 2.Jilin Agr Acad Sci, Inst Soil & Fertilizer, Gongzhuling 136100, Peoples R China 3.Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China 5.Chinese Acad Agr Sci CAAS, Inst Agr Resources & Reg Planning, Key Lab Cultivated Land Qual Monitoring & Evaluat, Minist Agr & Rural Affairs,State Key Lab Efficient, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Lei,Wang, Jun,Xu, Hu,et al. Soil organic carbon priming co-regulated by labile carbon input level and long-term fertilization history[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,902:10. |
| APA | Wu, Lei.,Wang, Jun.,Xu, Hu.,Xu, Xinliang.,Gao, Hongjun.,...&Zhang, Wenju.(2023).Soil organic carbon priming co-regulated by labile carbon input level and long-term fertilization history.SCIENCE OF THE TOTAL ENVIRONMENT,902,10. |
| MLA | Wu, Lei,et al."Soil organic carbon priming co-regulated by labile carbon input level and long-term fertilization history".SCIENCE OF THE TOTAL ENVIRONMENT 902(2023):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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