Arid
DOI10.1007/s11104-010-0367-5
Annual emissions of greenhouse gases from sheepfolds in Inner Mongolia
Chen, Weiwei1; Wolf, Benjamin2; Brueggemann, Nicolas2; Butterbach-Bahl, Klaus2; Zheng, Xunhua1
通讯作者Zheng, Xunhua
来源期刊PLANT AND SOIL
ISSN0032-079X
出版年2011
卷号340期号:1-2页码:291-301
英文摘要

Sheepfolds represent significant hot spot sources of greenhouse gases (GHG) in semi-arid grassland regions, such as Inner Mongolia in China. However, the annual contribution of sheepfolds to regional GHG emissions is still unknown. In order to quantify its annual contribution, we conducted measurements of carbon dioxide (CO(2)), methane (CH(4)) and nitrous oxide (N(2)O) fluxes at two sheepfold sites in the Baiyinxile administrative region of Inner Mongolia for 1 year, using static opaque chamber and gas chromatography methods. Our data show that, at an annual scale, both sheepfolds functioned as net sources of CO(2), CH(4) and N(2)O. Temperatures primarily determined the seasonal pattern of CO(2) emission; 60-84% of the CO(2) flux variation could be explained by temperature changes. High rates of net CH(4) emissions from sheepfold soils were only observed when animals (sheep and goats) were present. While nitrous oxide emissions were also stimulated by the presence of animals, pulses of N(2)O emissions were also be related to rainfall and spring-thaw events. The total annual cumulative GHG emissions in CO2 equivalents (CO2: 1; CH(4):25; and N(2)O:298) were quantified as 87.4 +/- 18.4 t ha(-1) for the sheepfold that was used during the non-grazing period (i.e., winter sheepfold) and 136.7 +/- 15.9 t ha(-1) used during the grazing period (i.e., summer sheepfold). Of the annual total GHG emissions, CH(4) release accounted for approximately 1% of emissions, while CO(2) and N(2)O emissions contributed to approximately 59% and 40%, respectively. The total GHG emission factor (CO(2)+CH(4)+N(2)O) per animal for the sheepfolds investigated in this study was 30.3 kg CO(2) eq yr(-1) head(-1), which translates to 0.3, 18.8 and 11.2 kg CO(2) eq yr(-1) head(-1) for CH(4), CO(2) and N(2)O, respectively. Sheepfolds accounted for approximately 34% of overall N(2)O emissions in the Baiyinxile administrative region, a typical steppe region within Inner Mongolia. The contribution of sheepfolds to the regional CO(2) or CH(4) exchange is marginal.


英文关键词Carbon dioxide Methane Nitrous oxide Sheepfold Semi-arid grassland Xilin River catchment
类型Article
语种英语
国家Peoples R China ; Germany
收录类别SCI-E
WOS记录号WOS:000288607300022
WOS关键词NITROUS-OXIDE EMISSIONS ; METHANE FLUXES ; HETEROTROPHIC RESPIRATION ; EXCRETA DEPOSITION ; CARBON-DIOXIDE ; N2O EMISSIONS ; SOIL ; GRASSLAND ; CH4 ; ECOSYSTEM
WOS类目Agronomy ; Plant Sciences ; Soil Science
WOS研究方向Agriculture ; Plant Sciences
来源机构中国科学院大气物理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/169983
作者单位1.Chinese Acad Sci, State Key Lab Atmospher Boundary Layer Phys & Atm, Inst Atmospher Phys, Beijing 100029, Peoples R China;
2.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Atmospher Environm Res IMK IFU, D-82467 Garmisch Partenkirchen, Germany
推荐引用方式
GB/T 7714
Chen, Weiwei,Wolf, Benjamin,Brueggemann, Nicolas,et al. Annual emissions of greenhouse gases from sheepfolds in Inner Mongolia[J]. 中国科学院大气物理研究所,2011,340(1-2):291-301.
APA Chen, Weiwei,Wolf, Benjamin,Brueggemann, Nicolas,Butterbach-Bahl, Klaus,&Zheng, Xunhua.(2011).Annual emissions of greenhouse gases from sheepfolds in Inner Mongolia.PLANT AND SOIL,340(1-2),291-301.
MLA Chen, Weiwei,et al."Annual emissions of greenhouse gases from sheepfolds in Inner Mongolia".PLANT AND SOIL 340.1-2(2011):291-301.
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