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| DOI | 10.11686/cyxb2016168 |
| Response of CO2 exchanges to short-term grazing by Euler's sheep in an alpine meadow in the peak of the growing season | |
| Li Y.-T.; Yi S.-H.; Hou F.-J.; Chang S.-H.; Wang Z.-F.; Qin Y.; Chen J.-J. | |
| 发表日期 | 2017 |
| ISSN | 10045759 |
| 卷号 | 26期号:4 |
| 英文摘要 | The aim of this study was to evaluate the effects of grazing on ecosystem respiration and productivity in a meadow grassland on the Qinghai-Tibetan Plateau. We used an LI-8150 Automated Soil CO2 Flux System and a LED light system to simulate maximum photosynthetic active radiation, and measured ecosystem respiration (Re) and potential net ecosystem productivity (NEPpot) under three grazing treatments (no grazing, light, and heavy grazing) in a meadow grassland of Maqu County, Gansu Province, on the Qinghai-Tibetan Plateau in August 2014. The results can be summarized as follows: 1) The diurnal NEPpot peaked at noon in all three treatments, and increased with decreasing grazing intensity (P>0.05). The Re and potential gross primary productivity (GPPpot) showed similar patterns; 2) The NEPpot, Re, and GPPpot decreased from early to middle to late August under all of the different grazing rates during the study period; 3) The aboveground biomass in the light and heavy grazing treatments was significantly reduced by 24.88% and 47.69%, respectively, as compared with the no-grazing treatment in late August; 4) Aboveground biomass was more sensitive to grazing than were GPPpot, NEPpot, and Re (P<0.001). NEPpot, Re, and GPPpot were significantly positively correlated with average temperature (P<0.001) and significantly negatively correlated with soil moisture at 5 cm depth (P<0.001). Consequently, the NEPpot, Re, and GPPpot gradually decreased with increasing grazing intensity and decreasing aboveground biomass. Copyright © ACTA PRATACULTURAE SINICA. All rights reserved. |
| 英文关键词 | Alpine meadow; Grazing; Potential gross primary productivity; Potential net ecosystem productivity |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85023192353&doi=10.11686%2fcyxb2016168&partnerID=40&md5=1d025a1735fbc1c4c82a95ad7ef662a6 |
| 语种 | 英语 |
| 来源期刊 | Acta Prataculturae Sinica
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77616 |
| 推荐引用方式 GB/T 7714 | Li Y.-T.； Yi S.-H.； Hou F.-J.； Chang S.-H.； Wang Z.-F.； Qin Y.； Chen J.-J.. Response of CO2 exchanges to short-term grazing by Euler's sheep in an alpine meadow in the peak of the growing season[J]. 中国科学院西北生态环境资源研究院,2017,26(4). |
| APA | Li Y.-T.； Yi S.-H.； Hou F.-J.； Chang S.-H.； Wang Z.-F.； Qin Y.； Chen J.-J..(2017).Response of CO2 exchanges to short-term grazing by Euler's sheep in an alpine meadow in the peak of the growing season.Acta Prataculturae Sinica,26(4). |
| MLA | Li Y.-T.； Yi S.-H.； Hou F.-J.； Chang S.-H.； Wang Z.-F.； Qin Y.； Chen J.-J.."Response of CO2 exchanges to short-term grazing by Euler's sheep in an alpine meadow in the peak of the growing season".Acta Prataculturae Sinica 26.4(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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