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Retrieval of forest canopy attributes based on a geometric-optical model using airborne LiDAR and optical remote-sensing data

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Cao C, Bao Y, Xu M, Chen W, Zhang H, He Q, Li Z, Guo H, Li J, Li X, Li G. Retrieval of forest canopy attributes based on a geometric-optical model using airborne LiDAR and optical remote-sensing data. International Journal of Remote Sensing, 2012, 33(3): 692-709, doi:10.1080/01431161.2011.577830.

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Type Of Reference JOUR
Title Retrieval of forest canopy attributes based on a geometric-optical model using airborne LiDAR and optical remote-sensing data
Authors Cao, Chunxiang| Bao, Yunfei| Xu, Min| Chen, Wei| Zhang, Hao| He, Qisheng| Li, Zengyuan| Guo, Huadong| Li, Jiahong| Li, Xiaowen| Li, Guanghe|
Secondary Title International Journal of Remote Sensing
Abstract In the retrieval of forest canopy attributes using a geometric-optical model, the spectral scene reflectance of each component should be known as prior knowledge. Generally, these reflectances were acquired by a foregone survey using an analytical spectral device. This article purposed to retrieve the forest structure parameters using light detection and ranging (LiDAR) data, and used a linear spectrum decomposition model to determine the reflectances of the spectral scene components, which are regarded as prior knowledge in the retrieval of forest canopy cover and effective plant area index (PAIe) using a simplified Li–Strahler geometric-optical model based on a Satellites Pour l'Observation de la Terre 5 (SPOT-5) high-resolution geometry (HRG) image. The airborne LiDAR data are first used to retrieve the forest structure parameters and then the proportion of the SPOT pixel not covered by crown or shadow Kg of each pixel in the sample was calculated, which was used to extract the reflectances of the spectral scene components by a linear spectrum decomposition model. Finally, the forest canopy cover and PAIe are retrieved by the geometric-optical model. As the acquired time of SPOT-5 image and measured data has a discrepancy of about 2 months, the retrieved result of forest canopy cover needs a further validation. The relatively high value of R 2 between the retrieval result of PAIe and the measurements indicates the efficiency of our methods.
Date 2012///
Year 2012
DOI 10.1080/01431161.2011.577830
Database Provider Taylor and Francis+NEJM
volume 33
Issue Number 3
Start Page 692
Issn 0143-1161
Url http://www.tandfonline.com/doi/abs/10.1080/01431161.2011.577830
Access Date 2013/10/04/06:22:55
file_attachments2 http://www.tandfonline.com/doi/abs/10.1080/01431161.2011.577830#.Uk5evXjn5eQ
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