Modeling gross primary productivity for winter wheat-maize double cropping System using MODIS time series and CO(2) eddy flux tower data
文献类型：SCI/SSCI论文
| 作者 | Yan H. M. ; Fu Y. L. ; Xiao X. M. ; Huang H. Q. ; He H. L. ; Ediger L. |
| 发表日期 | 2009 |
| 关键词 | Crop intensity Vegetation index Vegetation photosynthesis model Multiple cropping light-use efficiency net primary productivity photosynthetically active radiation evergreen needleleaf forest vegetation water-content remote-sensing data north china plain ecosystem exchange climate data tibetan plateau |
| 英文摘要 | Accurate and spatially explicit monitoring of gross primary productivity of agricultural ecosystems at a large scale is of great significance to assessment of crop conditions and agricultural production, and is necessary for understanding the carbon balance of the terrestrial biosphere. Identifying crop intensity (including multiple cropping and crop calendar) dynamics and assigning appropriate light use efficiency to C3 and C4 crops could substantially improve our ability to model and evaluate the seasonal dynamics of carbon flux in intensified agricultural ecosystems. In this paper, we have analyzed temporal dynamics of vegetation indices and phenological characteristics in the winter-wheat and maize double cropping system using multi-year satellite images from the moderate resolution imaging spectral radiometer (MODIS) and in situ observation of key crop phenological transition dates. The multiple cropping and crop calendar information were incorporated into simulations of the satellite-based vegetation photosynthesis model (VPM). Canopy-level maximum light use efficiency, a key parameter in the satellite-based VPM model, was estimated for both winter wheat (0) and maize (C4) based on the observed CO(2) flux data from an eddy flux tower site in a winter wheat-maize double cropping agro-ecosystem in the Huang-Huai-Hai plain, China. The seasonal dynamics of GPP predicted by the VPM model agreed well with estimated GPP from eddy flux tower data. These results demonstrate the potential of the satellite-driven VPM model for scaling-up GPP estimation of intensified agricultural ecosystems, which is relevant to food production and security. (C) 2008 Elsevier B.V. All rights reserved. |
| 出处 | Agriculture Ecosystems & Environment |
| 卷 | 129 |
| 期 | 4 |
| 页 | 391-400 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0167-8809 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22634]  |
| 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 | Yan H. M.,Fu Y. L.,Xiao X. M.,et al. Modeling gross primary productivity for winter wheat-maize double cropping System using MODIS time series and CO(2) eddy flux tower data. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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