Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China
文献类型：期刊论文
| 作者 | Wu, Jiabing2; Sun, Jinwei1,2; Guan, Dexin2; Yang, Hong2; Yin, Guanghua2; Wang, Anzhi2; Yuan, Fenghui1,2; Jin, Changjie2 |
| 刊名 | JOURNAL OF APPLIED REMOTE SENSING
 |
| 出版日期 | 2011-09-06 |
| 卷号 | 5 |
| ISSN号 | 1931-3195 |
| 关键词 | Modis Remote Sensing Global Primary Production Flux Tower |
| DOI | 10.1117/1.3624519 |
| 英文摘要 | To improve the accuracy of the moderate resolution imaging spectroradiometer (MODIS) gross primary production (GPP) algorithm, it is critical to evaluate MODIS GPP production for different land cover types using ground-based measurements. In this paper the MODIS primary production products (MOD17) is evaluated by using site-specific input parameters to the algorithm and compared to the results of eddy covariance measurements over an old-growth forest. Direct comparisons suggest that 8-day GPP predicted by the standard MODIS algorithm was highly correlated with flux tower based GPP (r(2) = 0.77, P<0.001), while with an average underestimation of 39%. The difference is substantial in magnitude mainly because the inputs of underestimated MODIS biome-specific parameters, maximum light use efficiency epsilon(max) and MODIS derived fraction of photosynthetically active radiation. The modified MODIS algorithm GPP calculated with site-specific input parameters compares favorably with ground flux tower observations (r(2) = 0.92, relative error = 7%). These results suggest that the MODIS GPP production is most likely underpredicted in forest sites with high primary production, and site-specific input parameters could help to improve the accuracy of MODIS GPP algorithm. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3624519] |
| WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS |
| WOS记录号 | WOS:000294899000002 |
| 源URL | [http://210.72.129.5/handle/321005/121869]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Wu, Jiabing |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Forest & Soil Ecol, Inst Appl Ecol, Shenyang 110164, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Jiabing,Sun, Jinwei,Guan, Dexin,et al. Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China[J]. JOURNAL OF APPLIED REMOTE SENSING,2011,5. |
| APA | Wu, Jiabing.,Sun, Jinwei.,Guan, Dexin.,Yang, Hong.,Yin, Guanghua.,...&Jin, Changjie.(2011).Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China.JOURNAL OF APPLIED REMOTE SENSING,5. |
| MLA | Wu, Jiabing,et al."Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China".JOURNAL OF APPLIED REMOTE SENSING 5(2011). |
入库方式： OAI收割
来源：沈阳应用生态研究所
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