Uncertainty analysis in data processing on the estimation of net carbon exchanges at different forest ecosystems in China
文献类型：EI期刊论文
| 作者 | Yu Guirui
|
| 发表日期 | 2012 |
| 关键词 | Uncertainty analysis Budget control Carbon Carbon dioxide Data fusion Data processing Ecosystems Forestry Optimization Site selection |
| 英文摘要 | Information about the uncertainties associated with eddy covariance observations of surface-atmosphere CO2 exchange is of importance for model-data fusion in carbon cycling studies and the accurate evaluation of ecosystem carbon budgeting. In this paper, a comprehensive analysis was conducted to investigate the influence of data processing procedures, focusing especially on the nocturnal data correction and three procedures in nonlinear regression method of gap filling [i. e., the selection of respiration model (REM), light-response model (LRM) and parameter optimization criteria (POC)], on the annual net ecosystem CO2 exchange estimation at three forest ecosystems in ChinaFLUX with three yearly datasets for each site. The results showed that uncertainties caused from four methodological uncertainties were between 61 and 108 g C m-2 year-1, with 61-93 g C m-2 year-1 (21-30%) in a temperate mixed forest, 80-107 g C m-2 year-1 (19-21%) in a subtropical evergreen coniferous plantation and 77-108 g C m-2 year-1 (16-19%) in a subtropical evergreen broad-leaved forest. Factorial analysis indicated that the largest uncertainty was associated with the choice of POC in the regression method across all sites in all years, while the influences of the choice of models (i. e., REM and LRM) varied with climate conditions at the measurement station. Furthermore, the uncertainty caused by data processing procedures was of approximately the same magnitude as the interannual variability in the three sites. This result stressed the importance to understand the uncertainty caused by data processing to avoid the introduction of artificial between-year and between-site variability that hampers comparative analysis. 2011 The Japanese Forest Society and Springer. |
| 出处 | Journal of Forest Research
 |
| 卷 | 17期:3页:312-322 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/27643]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心 |
| 推荐引用方式 GB/T 7714 | Yu Guirui. Uncertainty analysis in data processing on the estimation of net carbon exchanges at different forest ecosystems in China. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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