Changes in cropland soil inorganic carbon and its relationship with nitrogen fertilization and precipitation over the past 40 years in the Sichuan Basin, China
文献类型：期刊论文
| 作者 | Li, Aiwen1; Cheng, Jinli1; Chen, Dan1; Chen, Xinyi1; Mao, Yaruo1; Deng, Qian1; Zhao, Bin6; Shi, Wenjiao4,5; Fan, Zemeng4,5; Wilson, John P.3,4,5 |
| 刊名 | JOURNAL OF INTEGRATIVE AGRICULTURE
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 24期号:11页码:4415-4429 |
| 关键词 | soil inorganic carbon change nitrogen fertilization precipitation Sichuan Basin |
| ISSN号 | 2095-3119 |
| DOI | 10.1016/j.jia.2025.04.039 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Widespread soil acidification driven by nitrogen (N) fertilization and precipitation challenges the conventional notion of the long-term stability of soil inorganic carbon (SIC) in agroecosystems. However, the changes in SIC with precipitation and N fertilization remain ambiguous. Based on 4,000+ soil samples collected in the 1980s and 2010s and by developing machine learning models to fill the missing SIC of soil samples, this study generated 3,697 paired soil samples between the two periods and then investigated the cropland SIC change and explored its relationship with precipitation and N fertilization across the Sichuan Basin, China. The results showed an overall SIC loss, with a decline of the mean SIC by 15.73%. SIC change varied with initial soil pH and initial SIC and exhibited an exponential relationship with soil pH change, indicating the changing role of carbonates in providing acid-buffering capacity. There was a parabolical relationship between the magnitude of SIC decline and N fertilizer rates, and low N fertilizer rates contributed to a reduction in SIC loss, while SIC loss was promoted by N fertilization occurred when N fertilizing rates exceeded 250 kg ha(-1) yr(-1). The change in SIC showed a sinusoidal variation with precipitation, with 950 mm being the threshold controlling whether SIC increased or decreased. Meanwhile, N fertilization did not alter the sinusoidal relationship between SIC change and precipitation. In areas with rainfall<950 mm, the high N fertilizer rate did not cause SIC loss, while higher precipitation could also cause larger SIC loss in areas with lower N fertilizer rates. These results suggest that SIC dynamics are jointly driven by precipitation and N fertilization and are controlled by acid-buffering mechanisms associated with initial pH and SIC, with precipitation being the predominant driver. These findings emphasize the need for more regional soil observations and in-depth studies of SIC change and its mechanisms for accurately estimating SIC change. |
| URL标识 | 查看原文 |
| WOS关键词 | ORGANIC-CARBON ; BUFFERING CAPACITY ; ACIDIFICATION ; SEQUESTRATION ; CLIMATE ; PH ; STORAGE ; SYSTEM ; STOCKS ; AREA |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001622294700001 |
| 出版者 | KEAI PUBLISHING LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217691]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Li, Qiquan |
| 作者单位 | 1.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Peoples R China; 2.Sichuan Green Food Dev Ctr, Chengdu 610041, Peoples R China 3.Univ Southern Calif, Spatial Sci Inst, Los Angeles, CA 90089 USA; 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 6.Sichuan Agr Univ, Coll Environm Sci, Chengdu 611130, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, Aiwen,Cheng, Jinli,Chen, Dan,et al. Changes in cropland soil inorganic carbon and its relationship with nitrogen fertilization and precipitation over the past 40 years in the Sichuan Basin, China[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2025,24(11):4415-4429. |
| APA | Li, Aiwen.,Cheng, Jinli.,Chen, Dan.,Chen, Xinyi.,Mao, Yaruo.,...&Li, Qiquan.(2025).Changes in cropland soil inorganic carbon and its relationship with nitrogen fertilization and precipitation over the past 40 years in the Sichuan Basin, China.JOURNAL OF INTEGRATIVE AGRICULTURE,24(11),4415-4429. |
| MLA | Li, Aiwen,et al."Changes in cropland soil inorganic carbon and its relationship with nitrogen fertilization and precipitation over the past 40 years in the Sichuan Basin, China".JOURNAL OF INTEGRATIVE AGRICULTURE 24.11(2025):4415-4429. |
入库方式： OAI收割
来源：地理科学与资源研究所
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