Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil
文献类型：期刊论文
| 作者 | Nie, X. J.1; Zhang, J. H.2,3 ; Cheng, J. X.1; Gao, H.1; Guan, Z. M.1
|
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2016 |
| 卷号 | 155期号:S1页码:1-8 |
| 关键词 | Organic carbon Soil microbial biomass Soil redistribution Water erosion Tillage erosion |
| ISSN号 | 0167-1987 |
| 通讯作者 | Zhang, J. H. |
| 英文摘要 | The information gap concerning the effect of soil redistribution on various carbon (C) pools will limit our understanding regarding the fate of eroded C. In this study, we selected a water- and tillage-eroded hillslope with a horizontal length of 45 m from the Sichuan Basin, China, to determine the impact of soil redistribution on particulate organic C from 0.0053 to 2 mm soil particles (POC), light fraction organic C (LFOC), dissolved organic C (DOC) and microbial biomass C (MBC). Soil erosion was evaluated at 5-m intervals from the summit to lower parts and soil deposition at the bottom of the hillslope. Within the erosional sites, tillage erosion- and water erosion-dominated subsites were identified. The POC content firstly decrease and then increased downslope, while the DOC exhibited an opposite pattern to the POC. The MBC content decreased downslope, while the LFOC increased. Overall, the erosional sites had lower POC and LFOC contents than depositional sites, demonstrating the depletion of POC and LFOC induced by soil erosion and the enrichment of POC and LFOC by soil deposition. Conversely, the contents of DOC and MBC were greater in the erosional sites than depositional sites. It was also observed that the LFOC distribution was strongly linked to fine (<0.05 mm) soil particles, indicating a preferentially transport of the light fraction C downslope in the process of water erosion. In addition, tillage erosion-dominated subsites had higher values of POC/SOC and DOC/SOC than water erosion-dominated subsites, suggesting lower depletion of POC and DOC by tillage erosion than water erosion. Likewise, the higher MBC/SOC values were found in tillage erosion-dominated subsites, thus implying that more SOC may be assimilated into microbial C under tillage erosion than water erosion. Our study confirms the need to consider microbial response to the dynamic replacement of erosion depleted SOC. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | MICROBIAL RESPONSES ; CESIUM-137 MEASUREMENTS ; ARABLE FIELDS ; EROSION ; MATTER ; DEPOSITION ; DYNAMICS ; LAND ; MINERALIZATION ; CROPLAND |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366066200001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/13968]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Henan Polytech Univ, Sch Surveying & Land Informat Engn, Minist Land & Resources China,Field Sci Observat, Land Res Integrated Monitoring & Sustainable Util, Jiaozuo 454003, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nie, X. J.,Zhang, J. H.,Cheng, J. X.,et al. Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil[J]. SOIL & TILLAGE RESEARCH,2016,155(S1):1-8. |
| APA | Nie, X. J.,Zhang, J. H.,Cheng, J. X.,Gao, H.,&Guan, Z. M..(2016).Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil.SOIL & TILLAGE RESEARCH,155(S1),1-8. |
| MLA | Nie, X. J.,et al."Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil".SOIL & TILLAGE RESEARCH 155.S1(2016):1-8. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
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。