Measurement and Analysis of Bidirectional SIF Emissions in Wheat Canopies
文献类型：期刊论文
| 作者 | Liu, Liangyun; Liu, Xinjie; Wang, Zhihui; Zhang, Bing |
| 刊名 | IEEE Transactions on Geoscience and Remote Sensing
 |
| 出版日期 | 2016 |
| 卷号 | 54期号:5页码:2640-2651 |
| 关键词 | BROAD-BAND CONVERSIONS LAND-SURFACE ALBEDO WATER-VAPOR NARROW-BAND MODIS REFLECTANCE VALIDATION PRODUCTS ATMOSPHERE RADIATION |
| 英文摘要 | Numerous observations and modeling results have shown that there is noticeable directional variation in the solar-induced chlorophyll fluorescence (SIF), and this has not been well investigated. In this paper, 16 multiangular spectral observations were carried out on winter wheat to assess the bidirectional SIF emission. First, the bidirectional SIF emission was retrieved from the spectral measurements made by a high-performance QE Pro spectrometer and an automatic multiangle observation system using the 3FLD algorithm. The bidirectional shape of the SIF emission was found to be similar to that of the canopy reflectance in the solar principal plane, with a mean correlation coefficient of 0.94 and 0.97 at the O2-B and O2-A bands, respectively. The modified Rahman-Pinty-Verstraete (MRPV) model, a semiempirical bidirectional reflectance distribution function (BRDF) model, was then employed to describe the bidirectional variation in the SIF and reflectance with a mean root-mean-square-error value of 0.036 and 0.041 mW m-2sr-1nm-1for the SIF at the O2-B and O2-A bands, respectively. Finally, both the bidirectional reflectance and SIF were BRDF corrected to nadir using the MRPV model. Most of the directional variation was successfully corrected by this method-the mean correction ratios were 87% and 81% for the reflectance at the O2-B and O2-A bands and 84% and 72% for the SIF at the O2-B and O2-A bands, respectively. Therefore, the SIF emission cannot be regarded as isotropic, and the high similarity between the bidirectional SIF and reflectance, together with the BRDF correction results, indicates that the bidirectional SIF emission can be adjusted using either the BRDF reflectance models or prior knowledge. © 1980-2012 IEEE. |
| 学科主题 | Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology |
| 类目[WOS] | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:20161702279690 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39187]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Liu, Liangyun,Liu, Xinjie,Wang, Zhihui,et al. Measurement and Analysis of Bidirectional SIF Emissions in Wheat Canopies[J]. IEEE Transactions on Geoscience and Remote Sensing,2016,54(5):2640-2651. |
| APA | Liu, Liangyun,Liu, Xinjie,Wang, Zhihui,&Zhang, Bing.(2016).Measurement and Analysis of Bidirectional SIF Emissions in Wheat Canopies.IEEE Transactions on Geoscience and Remote Sensing,54(5),2640-2651. |
| MLA | Liu, Liangyun,et al."Measurement and Analysis of Bidirectional SIF Emissions in Wheat Canopies".IEEE Transactions on Geoscience and Remote Sensing 54.5(2016):2640-2651. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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