Comparative analysis of temperature and CO2 fluxes for winter wheat in Tibetan Plain and North China Plain using the EMD method
文献类型：SCI/SSCI论文
| 作者 | Zhaoyang J. ; Qiang Y. ; Shuhe L. ; Tianduo W. ; Xiaomin S. ; Renhua Z. |
| 发表日期 | 2006 |
| 关键词 | empirical mode decomposition (EMD) intrinsic mode function (IMF) flux Hilbert transform wheat Tibet water-vapor exchange hilbert spectrum deciduous forest carbon-dioxide model photosynthesis conductance transpiration canopy leaf |
| 英文摘要 | Comparative study of spectral properties of temperature and CO2 fluxes measured by eddy covariance method at Yucheng (36 degrees 57'N, 116 degrees 36'E, 28 m a. s. l., in the North China Plain) and at Lhasa (29 degrees 41'N, 91 degrees 20'E, 3688 m a. s. l., on the Tibetan Plateau) is described using the empirical mode decomposition (EMD) method. The main results are: (1) The intrinsic oscillation modes or intrinsic mode functions (IMFs) were extracted from data of temperature (T) and CO2 fluxes (F) measured at Yucheng (T-1 and F-1) and Lhasa (T-2 and F-2). (2) Hilbert transform was applied to these IMF components, then the Hilbert-Huang spectra and the marginal spectra of these data were obtained. (3) Comparison of temperature and CO2 fluxes in North China Plain and on Tibetan Plain illustrated that the characteristic frequencies corresponding to T-1, F-1, T-2 and F-2 are 0.05 Hz, 0.03 Hz, 0.014 Hz and 0.005 Hz, respectively. |
| 出处 | Progress in Natural Science |
| 卷 | 16 |
| 期 | 10 |
| 页 | 1066-1071 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0071 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22281]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhaoyang J.,Qiang Y.,Shuhe L.,et al. Comparative analysis of temperature and CO2 fluxes for winter wheat in Tibetan Plain and North China Plain using the EMD method. 2006. |
入库方式： OAI收割
来源：地理科学与资源研究所
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