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Organic fertilization promotes soil organic carbon sequestration by offsetting gaseous losses in sloping purple soil croplands

文献类型：期刊论文

作者Liu, Xianglong5,6; Li, Qiuhong2; Yan, Fangfang4; Xu, Peng6; Liu, Dongyang3; Dong, Hongyang1; Zhang, Shihang5,6; Wang, Xiaoguo6; Zhu, Bo6
刊名CATENA
出版日期2026-06-01
卷号267页码:14
关键词Soil organic carbon Fertilization Gaseous losses Runoff losses Climatic factor Purple soil
ISSN号0341-8162
DOI10.1016/j.catena.2026.109948
通讯作者Wang, Xiaoguo(xgwang@imde.ac.cn)
英文摘要Although considerable research has examined the effects of soil respiration and erosion on soil organic carbon (SOC) loss, understanding of SOC loss through both gaseous and runoff-related pathways remains limited in sloping agroecosystems. In this study, a two-year field experiment under a wheat-maize rotation was carried out on sloping purple soil croplands to assess the effects of different fertilization regimes on SOC losses. The experimental treatments consisted of a control (CK), mineral fertilizers (NPK), organic manure combined with NPK (OMNPK), and crop residues combined with NPK (RSDNPK). The results indicated that organic fertilization significantly increased SOC loss through gaseous emissions and dissolved organic carbon (DOC) leaching, while reducing losses through sediment runoff, reflecting contrasting responses among SOC loss pathways. The three fertilization treatments (NPK, OMNPK, and RSDNPK) showed total SOC losses ranging from 8280.79 to 12,516.77 kg ha-1, which were substantially higher than those observed in the control treatment (6068.51 kg ha-1). Across all treatments, more than 98% of SOC loss originated from soil heterotrophic respiration, whereas the control treatment exhibited the highest proportion of runoff-related carbon loss (1.1%). By jointly assessing gaseous and runoff-related SOC loss pathways within a single field experiment, this study reveals contrasting regulatory mechanisms for SOC losses in sloping purple soils, with soil factors directly influencing gaseous SOC losses and climatic factors-especially rainfall-mainly controlling SOC losses via runoff pathways. The combined influence of soil and climatic factors accounted for 42% of the variation in gaseous SOC losses. Overall, the results suggest that organic fertilization leads to trade-offs among different SOC loss pathways and may enhance net ecosystem carbon balance under suitable management, highlighting the need to consider soil properties together with climatic conditions when developing sustainable carbon management strategies for agricultural ecosystems.
WOS关键词NITROGEN-FERTILIZATION ; LATERAL TRANSPORT ; CROP PRODUCTIVITY ; N2O EMISSIONS ; CO2 ; IMPACT ; MAIZE ; RESPIRATION ; TILLAGE ; RUNOFF
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:001710587700001
资助机构National Natural Science Founda-tion of China ; National Key Research and Development Program of China ; Key Program of China National Tobacco Corporation Sichuan
源URL[http://ir.yic.ac.cn/handle/133337/42231]  
专题烟台海岸带研究所_中科院烟台海岸带研究所知识产出
通讯作者Wang, Xiaoguo
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.POWERCHINA Chengdu Engn Corp Ltd, Chengdu 611130, Peoples R China
3.Sichuan Prov Tobacco Co, Liangshan Prefecture Branch, Xichang 615000, Sichuan, Peoples R China
4.Sichuan Prov Tobacco Co, Panzhihua Branch, Panzhihua 617000, Sichuan, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xianglong,Li, Qiuhong,Yan, Fangfang,et al. Organic fertilization promotes soil organic carbon sequestration by offsetting gaseous losses in sloping purple soil croplands[J]. CATENA,2026,267:14.
APA Liu, Xianglong.,Li, Qiuhong.,Yan, Fangfang.,Xu, Peng.,Liu, Dongyang.,...&Zhu, Bo.(2026).Organic fertilization promotes soil organic carbon sequestration by offsetting gaseous losses in sloping purple soil croplands.CATENA,267,14.
MLA Liu, Xianglong,et al."Organic fertilization promotes soil organic carbon sequestration by offsetting gaseous losses in sloping purple soil croplands".CATENA 267(2026):14.

入库方式： OAI收割

来源：烟台海岸带研究所

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