Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Response of ecosystem respiration to warming and grazing during the growing seasons in the alpine meadow on the Tibetan plateau | |
| Lin, Xingwu2; Zhang, Zhenhua3,5; Wang, Shiping1; Hu, Yigang4; Xu, Guangping6; Luo, Caiyun3; Chang, Xiaofeng3,5; Duan, Jichuang3,5; Lin, Qiaoyan3,5; Xu, Burenbayin3; Wang, Yanfen5; Zhao, Xinquan3; Xie, Zubin2 | |
| 2011-07-15 | |
| 发表期刊 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| ISSN | 0168-1923 |
| 卷号 | 151期号:7页码:792-802 |
| 文章类型 | Article |
| 摘要 | Intensive studies reveal that there is much uncertainty regarding how ecosystem and soil respiration will respond to warming and grazing, especially in the alpine meadow ecosystem. We conducted a first of its kind field-manipulative warming and grazing experiment in an alpine meadow on the Tibetan plateau to determine the effects of warming and grazing on ecosystem and soil respiration for 3-years, from 2006 to 2008. Generally, warming and grazing did not affect seasonal average ecosystem respiration (Re), and there was no interaction between grazing and warming. However, they significantly affected the Re early in the growing season and by the end of the growing season. Warming significantly increased seasonal average soil respiration (Rs) by 9.2%, whereas the difference mainly resulted from data gathered early in the growing season, before June 2007. Positive correlations between soil temperature and Re and Rs were observed, and soil temperature explained 63-83% of seasonal Re variations during the 3-year study and 19-34% of Rs variations in 2007. Seasonal Re in 2008 and Rs in 2007 were slightly negatively correlated to soil moisture, but interannual average Re decreased with a decrease in precipitation for all treatments. Warming and grazing reduced the Q(10) value of Re in 2007 and 2008 but did not affect the Q(10) value of Rs. The Q(10) values of Rs were much lower than the Q(10) values of Re in 2007. These results suggest that grazing may reduce the temperature sensitivity of Re and that Re was mainly controlled by soil temperature rather than moisture which varied with timescale in the alpine meadow. (C) 2011 Elsevier B.V. All rights reserved.; Intensive studies reveal that there is much uncertainty regarding how ecosystem and soil respiration will respond to warming and grazing, especially in the alpine meadow ecosystem. We conducted a first of its kind field-manipulative warming and grazing experiment in an alpine meadow on the Tibetan plateau to determine the effects of warming and grazing on ecosystem and soil respiration for 3-years, from 2006 to 2008. Generally, warming and grazing did not affect seasonal average ecosystem respiration (Re), and there was no interaction between grazing and warming. However, they significantly affected the Re early in the growing season and by the end of the growing season. Warming significantly increased seasonal average soil respiration (Rs) by 9.2%, whereas the difference mainly resulted from data gathered early in the growing season, before June 2007. Positive correlations between soil temperature and Re and Rs were observed, and soil temperature explained 63-83% of seasonal Re variations during the 3-year study and 19-34% of Rs variations in 2007. Seasonal Re in 2008 and Rs in 2007 were slightly negatively correlated to soil moisture, but interannual average Re decreased with a decrease in precipitation for all treatments. Warming and grazing reduced the Q(10) value of Re in 2007 and 2008 but did not affect the Q(10) value of Rs. The Q(10) values of Rs were much lower than the Q(10) values of Re in 2007. These results suggest that grazing may reduce the temperature sensitivity of Re and that Re was mainly controlled by soil temperature rather than moisture which varied with timescale in the alpine meadow. (C) 2011 Elsevier B.V. All rights reserved. |
| 关键词 | Warming Grazing Ecosystem Respiration Soil Respiration Alpine Meadow Soil Temperature And Moisture Climate Change Tibetan Plateau |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 关键词[WOS] | CARBON-DIOXIDE EXCHANGE ; NORTHERN TEMPERATE GRASSLAND ; SOIL RESPIRATION ; TALLGRASS PRAIRIE ; CO2 EXCHANGE ; INTERANNUAL VARIABILITY ; TERRESTRIAL ECOSYSTEMS ; SPECIES RICHNESS ; CYCLE FEEDBACKS ; ORGANIC-CARBON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000291283300004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/1528 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 5.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Guangxi Inst Bot, Guangxi 541006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Xingwu,Zhang, Zhenhua,Wang, Shiping,et al. Response of ecosystem respiration to warming and grazing during the growing seasons in the alpine meadow on the Tibetan plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2011,151(7):792-802. |
| APA | Lin, Xingwu.,Zhang, Zhenhua.,Wang, Shiping.,Hu, Yigang.,Xu, Guangping.,...&Xie, Zubin.(2011).Response of ecosystem respiration to warming and grazing during the growing seasons in the alpine meadow on the Tibetan plateau.AGRICULTURAL AND FOREST METEOROLOGY,151(7),792-802. |
| MLA | Lin, Xingwu,et al."Response of ecosystem respiration to warming and grazing during the growing seasons in the alpine meadow on the Tibetan plateau".AGRICULTURAL AND FOREST METEOROLOGY 151.7(2011):792-802. |
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