CO2 Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Jiang Chunming1,2; Yu Guirui1; Cao Guangmin3; Li Yingnian3; Zhang Shichun1,2; Fang Huajun1 |
| 刊名 | advances in atmospheric sciences
 |
| 出版日期 | 2010-11-01 |
| 卷号 | 27期号:6页码:1372-1379 |
| 关键词 | CO2 emission static chamber technique nonlinearity underestimation Qinghai-Tibetan Plateau |
| 英文摘要 | co2 efflux was estimated using different regression methods in static chamber observation from an alpine meadow on the qinghai-tibetan plateau. the co2 efflux showed a seasonal pattern, with the maximun flux occurring in the middle of july. the temperature sensitivity of co2 efflux (q (10)) was 3.9, which was at the high end of the range of global values. co2 emissions calculated by linear and nonlinear regression were significantly different (p < 0.05). compared with the linear regression, co2 emissions calculated by exponential regression and quadratic regression were 12.7% and 11.2% larger, respectively. however, there were no significant differences in temperature sensitivity values estimated by the three methods. in the entire growing season, the co2 efflux estimated by linear regression may be underestimated by up to 25% compared to the real co2 efflux. consequently, great caution should be taken when using published flux data obtained by linear regression of static chamber observations to estimate the regional co2 flux in alpine meadows on the qinghai-tibetan plateau. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | meteorology & atmospheric sciences |
| 研究领域[WOS] | meteorology & atmospheric sciences |
| 关键词[WOS] | chamber-based measurements ; soil respiration ; closed-chamber ; gas fluxes ; calibration functions ; numerical evaluation ; atmosphere ; efflux ; ecosystem ; exchange |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000283136900013 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/6890]  |
| 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, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang Chunming,Yu Guirui,Cao Guangmin,et al. CO2 Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau[J]. advances in atmospheric sciences,2010,27(6):1372-1379. |
| APA | Jiang Chunming,Yu Guirui,Cao Guangmin,Li Yingnian,Zhang Shichun,&Fang Huajun.(2010).CO2 Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau.advances in atmospheric sciences,27(6),1372-1379. |
| MLA | Jiang Chunming,et al."CO2 Flux Estimation by Different Regression Methods from an Alpine Meadow on the Qinghai-Tibetan Plateau".advances in atmospheric sciences 27.6(2010):1372-1379. |
入库方式： OAI收割
来源：西北高原生物研究所
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