A CANOPY RADIATIVE TRANSFER MODEL SUITABLE FOR HETEROGENEOUS AGRO-FORESTRY SCENES
文献类型：会议论文
| 作者 | Zeng Yelu2,3,4; Li Jing2,3; Liu Qinhuo2,3; Yin Gaofei1,2 ; Xu Baodong2,4; Fan Weiliang2; Zhao Jing2
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| 出版日期 | 2016 |
| 会议日期 | JUL 10-15, 2016 |
| 会议地点 | Beijing |
| 关键词 | Landscape heterogeneity Canopy structure Radiative transfer Hemispherical-directional reflectance factor (HDRF) Agro-forestry system |
| DOI | 10.1109/IGARSS.2016.7729945 |
| 页码 | 3648-3651 |
| 国家 | PEOPLES R CHINA |
| 英文摘要 | Landscape heterogeneity is a common natural phenomenon but is seldom considered in current radiative transfer models for predicting the surface reflectance. This paper developed an analytical Radiative Transfer model for heterogeneous Agro-Forestry scenes (RTAF). The scattering contribution of the non-boundary regions can be estimated from the SAILH model as homogeneous canopies, whereas that of the boundary regions is calculated based on the bidirectional gap probability by considering the interactions and mutual shadowing effects among different patches. The multiangular airborne observations and Discrete Anisotropic Radiative Transfer (DART) model simulations were used to validate and evaluate the RTAF model over an agro-forestry scene in Heihe River Basin, China. The results suggest the RTAF model can accurately simulate the hemisphericaldirectional reflectance factors (HDRFs) of the heterogeneous scenes in the red and near-infrared (NIR) bands. The boundary effect can significantly influence the angular distribution of the HDRFs and consequently enlarge the HDRF variations between the backward and forward directions. Compared with the widely used dominant cover type (DCT) and spectral linear mixture (SLM) models, the RTAF model reduced the maximum relative error from 25.7% (SLM) and 23.0% (DCT) to 9.8% in the red band, and from 19.6% (DCT) and 13.7% (SLM) to 8.7% in the NIR band. The RTAF model provides a promising way to improve the retrieval of biophysical parameters (e. g. leaf area index) from remote sensing data over heterogeneous agro-forestry scenes. |
| 产权排序 | 4 |
| 会议录 | 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
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| 会议录出版者 | IEEE |
| 会议录出版地 | NEW YORK |
| 语种 | 英语 |
| ISSN号 | 2153-6996 |
| ISBN号 | 978-1-5090-3332-4 |
| WOS记录号 | WOS:000388114603170 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35222]  |
| 专题 | 成都山地灾害与环境研究所_数字山地与遥感应用中心 |
| 通讯作者 | Li Jing; Liu Qinhuo |
| 作者单位 | 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China 2.State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100101, China; 3.Joint Center for Global Change Studies, Beijing, 100875, China; 4.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; |
| 推荐引用方式 GB/T 7714 | Zeng Yelu,Li Jing,Liu Qinhuo,et al. A CANOPY RADIATIVE TRANSFER MODEL SUITABLE FOR HETEROGENEOUS AGRO-FORESTRY SCENES[C]. 见:. Beijing. JUL 10-15, 2016. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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