Dynamics of soil aggregate-associated carbon as influenced by simulated tillage and runoff | |
Li, Lu6; Wang, Enheng; Cao, Wei; Zhao, Pengzhi1; Lin, Lin2; Zhai, Guoqing3; Cruse, Richard M. | |
刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL |
2022 | |
卷号 | 86期号:6页码:1457-1469 |
ISSN号 | 0361-5995 |
DOI | 10.1002/saj2.20460 |
文献子类 | Article |
英文摘要 | Tillage practices and water erosion are the most important anthropogenic and natural processes, respectively, driving soil organic C turnover in agricultural land. The aim of this study was to explore the responses of soil organic C (SOC) turnover to tillage and runoff by comparing the variation of soil aggregate-associated organic C (AOC) and intra-aggregate particulate organic C (iPOC) under simulated tillage and runoff conditions. Soil samples were collected from a native vegetation land with no cultivation history in the Mollisol region of Northeast China. After a series of simulated tillage (ST) and simulated runoff (SR) treatments, the samples were incubated for 30 d and then separated through 2-, 1-, 0.25-, and 0.053-mm sieves by wet-sieving to obtain different aggregate size fractions. Each aggregate fraction was subsequently shaken for 18 h in 0.5% hexametaphosphate to get different intra-aggregate particle size fractions. The proportion of the fractions and their AOC and iPOC were determined. The ST treatment promoted the reaggregation of macroaggregates (>2 mm) by accelerating the turnover of their coarse iPOC (0.25-2 mm), leading to a lower concentration of AOC. Runoff transformed larger aggregates (>0.25 mm) to smaller particles (<0.25 mm) without catalyzing C turnover. Fine iPOC (0.053-0.25 mm) could serve as an indicator for AOC (>1 mm) dynamics, especially associated with tillage operations. Our findings highlight the different influences of tillage and runoff, and the negative effect of tillage on SOC dynamics. |
学科主题 | Soil Science |
电子版国际标准刊号 | 1435-0661 |
出版地 | HOBOKEN |
WOS关键词 | PARTICULATE ORGANIC-MATTER ; RARE-EARTH-OXIDES ; EROSION ; TURNOVER ; STORAGE ; SEQUESTRATION ; STABILIZATION ; DECOMPOSITION ; INFORMATION ; TEMPERATURE |
WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
语种 | 英语 |
出版者 | WILEY |
WOS记录号 | WOS:000846831200001 |
资助机构 | National Key R&D Program of China - Ministry of Science and Technology of the People's Republic of China [2021YFD1500600, 2021YFD1500705] |
内容类型 | 期刊论文 |
源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28505] |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Univ Basel, Dept Environm Sci, CH-4056 Basel, Switzerland 2.UCLouvain, Earth & Life Inst, Georges Lemaitre Ctr Earth & Climate Res, B-1348 Louvain, Belgium 3.Univ Ghent, Dept Environm Soil Phys Units, B-9000 Ghent, Belgium 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 5.Cruse, Richard M.] Iowa State Univ, Dept Agron, Ames, IA 50011 USA 6.Northeast Forestry Univ, Coll Forestry, Harbin 150040, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Lu,Wang, Enheng,Cao, Wei,et al. Dynamics of soil aggregate-associated carbon as influenced by simulated tillage and runoff[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2022,86(6):1457-1469. |
APA | Li, Lu.,Wang, Enheng.,Cao, Wei.,Zhao, Pengzhi.,Lin, Lin.,...&Cruse, Richard M..(2022).Dynamics of soil aggregate-associated carbon as influenced by simulated tillage and runoff.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,86(6),1457-1469. |
MLA | Li, Lu,et al."Dynamics of soil aggregate-associated carbon as influenced by simulated tillage and runoff".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 86.6(2022):1457-1469. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论