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Temperature effects on cropland soil particulate and mineral-associated organic carbon are governed by agricultural land-use types

文献类型：期刊论文

作者Li, Chengji2; Ran, Min2; Song, Liangying2; Zhang, Yuanyuan2; Li, Aiwen2; Shi, Wenjiao3,6; Li, Wendan2; Cheng, Jinli2; Zhao, Bin5; Luo, Youlin2
刊名GEODERMA
出版日期2024-08-01
卷号448页码:11
关键词Soil organic carbon Agricultural land use Temperature Particulate organic carbon Mineral-associated organic carbon
ISSN号0016-7061
DOI10.1016/j.geoderma.2024.116942
产权排序2
英文摘要Agricultural land use and temperature change can profoundly affect soil organic carbon (SOC), but their combined effects on regulating cropland SOC fractions over broad geographic scales remain poorly understood. Based on 871 topsoil (0-20 cm) samples collected from the Sichuan Basin of China, we used random forest model and partial correlations analysis to explore how the functionally distinct SOC fractions, including particulate and mineral-associated organic C (POC and MAOC), are affected by both agricultural land use and temperature over a large scale. The results show that POC accounts for 32.54 % of the total cropland SOC and soils with high SOC contents have larger proportions of POC. Cropland type is the dominant control of the two SOC fractions and regulates the impacts of other factors. The contents of soil POC and MAOC in dryland are much lower than that in paddy field and dryland-paddy rotation land. Significant correlations between mean annual temperature and the two SOC fractions are only found in dryland and dryland-paddy rotation land, while mean annual temperature has no impact on both POC and MAOC in paddy field. Meanwhile, the correlation coefficients between mean annual temperature and POC and MAOC for dryland decreased by 61.90 % and 69.23 %, respectively, and for dryland-paddy rotation land decreased by 28.00 % and 14.29 %, respectively, after removing correlations with net primary productivity. Additionally, correlation between mean annual temperature and POC is slightly higher than that between mean annual temperature and MAOC in dryland, while the reverse in dryland-paddy rotation land. These results suggest that the temperature effects on POC and MAOC are cropland type-dependent. To accurately predicting future cropland SOC change and reliably evaluate the potential contribution of cropland soil C sequestration, fraction-specific control mechanisms related to cropland type should be sufficiently considered in carbon models.
WOS关键词MATTER ; CHINA ; ACCUMULATION ; STORAGE ; STABILIZATION ; DECOMPOSITION ; ACIDIFICATION ; RELEVANCE ; CLIMATE ; AREA
资助项目National Natural Science Foundation of China[42330707] ; National Natural Science Foundation of China[41930647] ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China[72221002] ; Natural Science Foundation of Sichuan Province, China[2022NSFSC0104]
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001333306600001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China ; Natural Science Foundation of Sichuan Province, China
源URL[http://ir.igsnrr.ac.cn/handle/311030/210027]  
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.Minist Nat Resources, Key Lab Invest & Monitoring, Protect & Utilizat Cultivated Land Resources, Chengdu 611130, Peoples R China
2.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Univ Southern Calif, Spatial Sci Inst, Los Angeles, CA 90089 USA
5.Sichuan Agr Univ, Coll Environm Sci, Chengdu 611130, Peoples R China
6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Chengji,Ran, Min,Song, Liangying,et al. Temperature effects on cropland soil particulate and mineral-associated organic carbon are governed by agricultural land-use types[J]. GEODERMA,2024,448:11.
APA Li, Chengji.,Ran, Min.,Song, Liangying.,Zhang, Yuanyuan.,Li, Aiwen.,...&Li, Qiquan.(2024).Temperature effects on cropland soil particulate and mineral-associated organic carbon are governed by agricultural land-use types.GEODERMA,448,11.
MLA Li, Chengji,et al."Temperature effects on cropland soil particulate and mineral-associated organic carbon are governed by agricultural land-use types".GEODERMA 448(2024):11.

入库方式： OAI收割

来源：地理科学与资源研究所

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