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Dynamic and complex microclimate responses to warming and grazing manipulations
文献类型：期刊论文
| 作者 | Klein, JA; Harte, J; Zhao, XQ |
| 刊名 | global change biology
 |
| 出版日期 | 2005-09-01 |
| 卷号 | 11期号:9页码:1440-1451 |
| 关键词 | alpine climate warming experimental grazing experimental warming global change microclimate open-top chambers rangelands Tibetan Plateau tundra |
| 合作状况 | 其它 |
| 中文摘要 | synthesis efforts that identify patterns of ecosystem response to a suite of warming manipulations can make important contributions to climate change science. however, cross-study comparisons are impeded by the paucity of detailed analyses of how passive warming and other manipulations affect microclimate. here we document the independent and combined effects of a common passive warming manipulation, open-top chambers (otcs), and a simulated widespread land use, clipping, on microclimate on the tibetan plateau. otcs consistently elevated growing season averaged mean daily air temperature by 1.0-2.0 degrees c, maximum daily air temperature by 2.1-7.3 degrees c and the diurnal air temperature range by 1.9-6.5 degrees c, with mixed effects on minimum daily air temperature, and mean daily soil temperature and moisture. these otc effects on microclimate differ from reported effects of a common active warming method, infrared heating, which has more consistent effects on soil than on air temperature. there were significant interannual and intragrowing season differences in otc effects on microclimate. for example, while otcs had mixed effects on growing season averaged soil temperatures, otcs consistently elevated soil temperature by approximately 1.0 degrees c early in the growing season. nonadditive interactions between otcs and clipping were also present: otcs in clipped plots generally elevated air and soil temperatures more than otcs in nonclipped plots. moreover, site factors dynamically interacted with microclimate and with the efficacy of the otc manipulations.these findings highlight the need to understand differential microclimate effects between warming methods, within warming method across ecosystem sites, within warming method crossed with other treatments, and within sites over various timescales. methods, sites and scales are potential explanatory variables and covariables in climate warming experiments. consideration of this variability among and between experimental warming studies will lead to greater understanding and better prediction of ecosystem response to anthropogenic climate warming. |
| 英文摘要 | synthesis efforts that identify patterns of ecosystem response to a suite of warming manipulations can make important contributions to climate change science. however, cross-study comparisons are impeded by the paucity of detailed analyses of how passive warming and other manipulations affect microclimate. here we document the independent and combined effects of a common passive warming manipulation, open-top chambers (otcs), and a simulated widespread land use, clipping, on microclimate on the tibetan plateau. otcs consistently elevated growing season averaged mean daily air temperature by 1.0-2.0 degrees c, maximum daily air temperature by 2.1-7.3 degrees c and the diurnal air temperature range by 1.9-6.5 degrees c, with mixed effects on minimum daily air temperature, and mean daily soil temperature and moisture. these otc effects on microclimate differ from reported effects of a common active warming method, infrared heating, which has more consistent effects on soil than on air temperature. there were significant interannual and intragrowing season differences in otc effects on microclimate. for example, while otcs had mixed effects on growing season averaged soil temperatures, otcs consistently elevated soil temperature by approximately 1.0 degrees c early in the growing season. nonadditive interactions between otcs and clipping were also present: otcs in clipped plots generally elevated air and soil temperatures more than otcs in nonclipped plots. moreover, site factors dynamically interacted with microclimate and with the efficacy of the otc manipulations. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 生物科学 |
| 类目[WOS] | biodiversity conservation ; ecology ; environmental sciences |
| 研究领域[WOS] | biodiversity & conservation ; environmental sciences & ecology |
| 关键词[WOS] | international tundra experiment ; plant biomass ; ice cores ; temperature ; ecosystem ; metaanalysis ; feedbacks ; nitrogen ; decline ; growth |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000231396700004 |
| 公开日期 | 2009-12-09 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1363]  |
| 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.Univ Calif Berkeley, Div Ecosyst Sci, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA 2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Klein, JA,Harte, J,Zhao, XQ. Dynamic and complex microclimate responses to warming and grazing manipulations[J]. global change biology,2005,11(9):1440-1451. |
| APA | Klein, JA,Harte, J,&Zhao, XQ.(2005).Dynamic and complex microclimate responses to warming and grazing manipulations.global change biology,11(9),1440-1451. |
| MLA | Klein, JA,et al."Dynamic and complex microclimate responses to warming and grazing manipulations".global change biology 11.9(2005):1440-1451. |
入库方式： OAI收割
来源：西北高原生物研究所
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