Soil type-dependent effects of drying-wetting sequences on aggregates and their associated OC and N
文献类型:期刊论文
作者 | Mao, Na2,5; Wei, Xiaorong1,2,3; Shao, Mingan2,4 |
刊名 | INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
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出版日期 | 2022-12-01 |
卷号 | 10期号:4页码:649-661 |
关键词 | Aggregates Carbon Nitrogen Drying-wetting sequences Soil type |
ISSN号 | 2095-6339 |
DOI | 10.1016/j.iswcr.2022.03.0052095-6339 |
通讯作者 | Wei, Xiaorong(xrwei78@163.com) |
英文摘要 | Evaluating the impacts of drying-wetting (DW) cycles on soil aggregates and their associated organic carbon (OC) and nitrogen (N) is crucial to understand the OC and N cycles. Soils are likely subjected to DW cycles with different sequences depending on seasons or in agroecosystems. However, studies on how DW sequences influence OC and N dynamics within aggregates, and whether this effect is dependent on soil type, are relatively limited. Herein, two DW sequences, i.e., drying-wetting-drying-wetting (2DW) and wetting-drying-wetting-drying (2WD) treatments were designed, and a consistent wetting (CW) was set as a control to assess the effects of DW sequences. Four soils (Entisol, Ultisol, Anthrosol and Mollisol) varying in texture and OC content were used. The aggregate size distribution, the OC, total N (TN), readily oxidizable OC (ROOC) and mineral N (Min-N) content in aggregates were determined. Results showed that 2DW treatment increased but 2WD treatment decreased the large aggregates of Entisol and Ultisol, while 2DW and 2WD treatments synchronously increased the large aggregates of Anthrosol but decreased them of Mollisol. Two DW treatments increased the OC in each aggregate of Entisol, Anthrosol and Mollisol but decreased them of Ultisol. The 2DW didn't affect but 2WD treatment decreased ROOC in 1-2 mm aggregates of Entisol and <0.25 mm aggregates of Ultisol and Mollisol. The 2DW and 2WD treatments minimally affected TN but potentially influenced Min-N in aggregates. The 2DW and 2WD treatments both decreased the Min-N in each aggregate size class of Entisol and Mollisol, while 2DW increased but 2WD treatment decreased Min-N in each aggregate of Ultisol and Anthrosol. These results indicated that the varied effects of DW sequences and the interactive effects of soil type with DW sequences on aggregate turnover and OC and N cycling should be recon-sidered to provide more precisive evidences for global C and N cycles under the scenario of future climate changes. (c) 2022 International Research and Training Center on Erosion and Sedimentation, China Water and Power Press, and China Institute of Water Resources and Hydropower Research. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
WOS关键词 | PARTICULATE ORGANIC-MATTER ; MICROBIAL BIOMASS ; MICROAGGREGATE FORMATION ; CARBON STABILIZATION ; CYCLES ; RESPIRATION ; STABILITY ; DYNAMICS ; MINERALIZATION ; RESPONSES |
资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070200] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China[41622105] ; National Natural Science Foundation of China[41977068] ; Chinese Academy of Sciences[QYZDB-SSW-DQC039] |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture ; Water Resources |
语种 | 英语 |
WOS记录号 | WOS:000893777300001 |
出版者 | KEAI PUBLISHING LTD |
资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Chinese Academy of Sciences |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/187766] ![]() |
专题 | 中国科学院地理科学与资源研究所 |
通讯作者 | Wei, Xiaorong |
作者单位 | 1.Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Mao, Na,Wei, Xiaorong,Shao, Mingan. Soil type-dependent effects of drying-wetting sequences on aggregates and their associated OC and N[J]. INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,2022,10(4):649-661. |
APA | Mao, Na,Wei, Xiaorong,&Shao, Mingan.(2022).Soil type-dependent effects of drying-wetting sequences on aggregates and their associated OC and N.INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,10(4),649-661. |
MLA | Mao, Na,et al."Soil type-dependent effects of drying-wetting sequences on aggregates and their associated OC and N".INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH 10.4(2022):649-661. |
入库方式: OAI收割
来源:地理科学与资源研究所
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