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Fluxes of CO2, CH4, and N2O in an alpine meadow affected by yak excreta on the Qinghai-Tibetan plateau during summer grazing periods
文献类型：期刊论文
| 作者 | Lin, Xingwu2,3,4; Wang, Shiping1; Ma, Xiuzhi5; Xu, Guangping1; Luo, Caiyun1; Li, Yingnian1; Jiang, Gaoming2; Xie, Zubin4 |
| 刊名 | soil biology & biochemistry
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 41期号:4页码:718-725 |
| 关键词 | Alpine meadow Dung and urine patches Greenhouse gas fluxes Qinghai-Tibetan plateau Soil temperature Soil water-filled pore space (WFPS) |
| 英文摘要 | to assess the impacts of yak excreta patches on greenhouse gas (ghg) fluxes in the alpine meadow of the qinghai-tibetan plateau. methane (ch4), carbon dioxide (co2), and nitrous oxide (n2o) fluxes were measured for the first time from experimental excreta patches placed on the meadow during the summer grazing seasons in 2005 and 2006. dung patches were ch4 sources (average 586 mu g m(-2) h(-1) in 2005 and 199 mu g m(-2) h(-1) in 2006) during the investigation period of two years, while urine patches (average -31 mu g m(-2) h(-1) in 2005 and -33 mu g m(-2) h(-1) in 2006) and control plots (average -28 mu g m(-2) h(-1) in 2005 and -30 mu g m(-2) h(-1) in 2006) consumed ch4. the cumulative co2 emission for dung patches was about 36-50% higher than control plots during the experimental period in 2005 and 2006. the cumulative n2o emissions for both urine and dung patches were 2.1-3.7 and 1.8-3.5 times greater than control plots in 2005 and 2006, respectively. soil water-filled pore space (wfps) explained 35% and 36% of ch4 flux variation for urine patches and control plots, respectively. soil temperature explained 40-75% of temporal variation of co2 emissions for all treatments. temporal n2o flux variation in urine patches (34%), dung patches (48%), and control (56%) plots was mainly driven by the simultaneous effect of soil temperature and wfps. although yak excreta patches significantly affected ghg fluxes, their contributions to the whole grazing alpine meadow in terms of co2 equivalents are limited under the moderate grazing intensity (1.45 yak ha(-1)). however, the contributions of excreta patches to n2o emissions are not negligible when estimating n2o emissions in the grazing meadow. in this study, the n2o emission factor of yak excreta patches varied with year (about 0.9-1.0%, and 0.1-0.2% in 2005 and 2006, respectively), which was lower than ipcc default value of 2%. (c) 2009 elsevier ltd. 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] | nitrous-oxide emissions ; methane emissions ; grassland soils ; inner-mongolia ; carbon-dioxide ; semiarid grassland ; greenhouse gases ; cattle ; slurry ; exchange |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265325300008 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/6887]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 5.Inner Mongolia Agr Univ, Coll Forestry, Hohhot 010018, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Xingwu,Wang, Shiping,Ma, Xiuzhi,et al. Fluxes of CO2, CH4, and N2O in an alpine meadow affected by yak excreta on the Qinghai-Tibetan plateau during summer grazing periods[J]. soil biology & biochemistry,2009,41(4):718-725. |
| APA | Lin, Xingwu.,Wang, Shiping.,Ma, Xiuzhi.,Xu, Guangping.,Luo, Caiyun.,...&Xie, Zubin.(2009).Fluxes of CO2, CH4, and N2O in an alpine meadow affected by yak excreta on the Qinghai-Tibetan plateau during summer grazing periods.soil biology & biochemistry,41(4),718-725. |
| MLA | Lin, Xingwu,et al."Fluxes of CO2, CH4, and N2O in an alpine meadow affected by yak excreta on the Qinghai-Tibetan plateau during summer grazing periods".soil biology & biochemistry 41.4(2009):718-725. |
入库方式： OAI收割
来源：西北高原生物研究所
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