Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10457-017-0112-7 |
Dynamics of soil-derived greenhouse gas emissions from shelterbelts under elevated soil moisture conditions in a semi-arid prairie environment | |
Amadi, Chukwudi C.; Farrell, Richard E.; Van Rees, Ken C. J. | |
通讯作者 | Amadi, Chukwudi C. |
来源期刊 | AGROFORESTRY SYSTEMS |
ISSN | 0167-4366 |
EISSN | 1572-9680 |
出版年 | 2018 |
卷号 | 92期号:2页码:321-334 |
英文摘要 | Soil moisture is known to be a major control of greenhouse gas (GHG) emissions from agricultural soils. However, there is little data regarding GHG exchange from the organic matter-rich soils characteristic of shelterbelts-especially under elevated soil moisture conditions. In the present study, we quantified CO2, CH4 and N2O fluxes from shelterbelts under elevated soil moisture (irrigated) and semi-arid (rainfed) conditions. Studies were carried out at the Canada-Saskatchewan Irrigation Diversification Centre (CSIDC) near Outlook, Saskatchewan. Non-steady state vented chambers were used to monitor soil GHG fluxes from three shelterbelts in 2013 and 2014. The shelterbelts consisted of a single row of caragana with a north-south orientation and a single row of Scots pine with either a north-south or east-west orientation. Each shelterbelt was divided into two areas based on whether or not it received irrigation. During the 2-year study period, N2O emissions from the irrigated shelterbelts (IR-SB) (0.93 kg N2O-N ha(-1)) were significantly greater than those from the rainfed shelterbelts (RF-SB) (0.49 kg N2O-N ha(-1)). Soil CH4 oxidation was significantly lower in the IR-SB compared to the RF-SB (-0.85 and -1.20 kg CH4-C ha(-1), respectively). Irrigation activities stimulated CO2 production/emission in 2014, but had no effect on CO2 emissions during the much drier 2013 season. Correlation analyses indicate a strong dependence of CO2 and CH4 fluxes on soil moisture in both IR-SB and RF-SB sites. There was a significant relationship between N2O emissions and soil moisture for the IR-SB sites in 2013; however, no such relationship was observed in either the IR-SB or RF-SB sites in 2014. Our study suggests that changes in precipitation patterns and soil moisture regime due to climate change could affect soil-atmosphere exchange of GHGs in shelterbelts; however, elevated soil moisture effect on GHG emissions will depend on the availability of N and C in the shelterbelts. |
英文关键词 | Shelterbelt Agroforestry Soil moisture Greenhouse gas N-fixation Irrigation Nitrous oxide Methane Carbon dioxide |
类型 | Article |
语种 | 英语 |
国家 | Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000428798800010 |
WOS关键词 | NITROUS-OXIDE EMISSIONS ; IRRIGATED CROPPING SYSTEMS ; CARBON-DIOXIDE ; METHANE OXIDATION ; WESTERN CANADA ; FOREST SOIL ; N2O ; ATMOSPHERE ; EXCHANGE ; FLUXES |
WOS类目 | Agronomy ; Forestry |
WOS研究方向 | Agriculture ; Forestry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207432 |
作者单位 | Univ Saskatchewan, Dept Soil Sci, Saskatoon, SK, Canada |
推荐引用方式 GB/T 7714 | Amadi, Chukwudi C.,Farrell, Richard E.,Van Rees, Ken C. J.. Dynamics of soil-derived greenhouse gas emissions from shelterbelts under elevated soil moisture conditions in a semi-arid prairie environment[J],2018,92(2):321-334. |
APA | Amadi, Chukwudi C.,Farrell, Richard E.,&Van Rees, Ken C. J..(2018).Dynamics of soil-derived greenhouse gas emissions from shelterbelts under elevated soil moisture conditions in a semi-arid prairie environment.AGROFORESTRY SYSTEMS,92(2),321-334. |
MLA | Amadi, Chukwudi C.,et al."Dynamics of soil-derived greenhouse gas emissions from shelterbelts under elevated soil moisture conditions in a semi-arid prairie environment".AGROFORESTRY SYSTEMS 92.2(2018):321-334. |
条目包含的文件 | 条目无相关文件。 |
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。