Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation
文献类型：期刊论文
| 作者 | Hua, Keke1,2; Zhu, Bo1 ; Wang, Xiaoguo1
|
| 刊名 | NUTRIENT CYCLING IN AGROECOSYSTEMS
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 103期号:1页码:75-86 |
| 关键词 | Soil carbon dioxide emission Dissolved organic carbon loss Flux Natural rainfall |
| ISSN号 | 1385-1314 |
| 通讯作者 | Zhu, Bo |
| 英文摘要 | Soil carbon dioxide (CO2) and methane (CH4) emissions, as well as runoff and leaching are major pathways of soil organic carbon (SOC) loss, which affect SOC sequestration in croplands. However, fluxes and relationships of the four pathways are still poorly understood. Static chamber-GC techniques were used to measure soil heterotrophic respiration rate and CH4 emission flux on hillslope upland of Regosol soil in Southwest China under traditional mineral fertilizer treatment from 2010 to 2012. Synchronously, SOC loss flux via overland flow, leaching and sediment was measured using free-drained lysimeters (8 m x 4 m). Average annual cumulative soil CO2 emission and CH4 uptake fluxes were 462.8 +/- A 52.2 and -1.1 +/- A 0.16 g cm(-2). Average annual cumulative dissolved organic carbon (DOC) loss fluxes via overland flow and leaching were 0.16 +/- A 0.03 and 0.92 +/- A 0.08 g cm(-2), respectively and organic C loss via sediment was 2.2 +/- A 0.3 g cm(-2). Relationship between DOC loss fluxes and soil heterotrophic respiration rates under natural rainfall events could be described by a significant exponential decay function (R = -0.63, P < 0.01). Moreover, a significantly negative correlation was also found between DOC loss flux and soil DOC content in topsoil at 15 cm depth (R = -0.75, P < 0.05). In conclusion, DOC loss decreases soil DOC content and is an underrated negative regulating factor of soil CO2 emission, especially in the regions where high DOC losses occur. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | NITROGEN-FERTILIZER ; CLIMATE-CHANGE ; SICHUAN BASIN ; GAS EMISSIONS ; UPLAND SOILS ; PURPLE SOIL ; CO2 EFFLUX ; LAND-USE ; OXIDATION ; RESPIRATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000361433200006 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/11000]  |
| 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.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 2.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Anhui Prov Key Lab Nutrient Recycling Resources &, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hua, Keke,Zhu, Bo,Wang, Xiaoguo. Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2015,103(1):75-86. |
| APA | Hua, Keke,Zhu, Bo,&Wang, Xiaoguo.(2015).Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation.NUTRIENT CYCLING IN AGROECOSYSTEMS,103(1),75-86. |
| MLA | Hua, Keke,et al."Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation".NUTRIENT CYCLING IN AGROECOSYSTEMS 103.1(2015):75-86. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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