Extending a canopy reflectance model for mangroves: A case study in south east queensland, Australia
文献类型：期刊论文
| 作者 | Niu, Chunyue3; Woodgate, William2; Phinn, Stuart R.; Roelfsema, Chris M.; Su, Yanjun3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022 |
| 卷号 | 316 |
| ISSN号 | 0168-1923 |
| 关键词 | Canopy reflectance modelling Mangroves Radiative transfer model Fractional cover Woody material |
| DOI | 10.1016/j.agrformet.2022.108875 |
| 文献子类 | Article |
| 英文摘要 | Mangroves are essential coastal wetland vegetation and their extent and leaf area index (LAI) have been mapped using remotely sensed Earth Observation images. However, the physics-based relationship between biophysical properties of mangroves, tidal height, and their spectral values remains underexplored. In order to quantitatively evaluate the impact of woody material on mangrove spectra from optical imagery, a canopy reflectance model (CRM) was extended to simulate and analyse the reflectance of mangroves. The fractional cover, leaf-to-total area ratio and water depth were included as model parameters, increasing the fidelity of the canopy architecture in the CRM. A mangrove study area in South East Queensland, Australia, was chosen for model parameterisation and verification using field and satellite data. Simulated Sentinel-2 reflectance spectra of the mangrove plots closely matched the observed pixel reflectance spectra, with their coefficient of determination (R2) values higher than 0.98 and root mean square error values lower than 0.01, which was better than the performance of the original CRM omitting the fractional cover and woody material. The inverted plant area index and fractional cover values from the satellite imagery closely matched the field-derived reference values (R2 = 0.78 and 0.97, respectively). Simulation results revealed that a higher proportion of woody material in crowns reduced the canopy reflectance of mangroves in the near infrared region and increased the reflectance in the shortwave infrared region. Moreover, the simulated reflectance of the Sentinel-2 red edge 1 (695-714 nm) was not sensitive to the wood proportion for the examined cases. The modelling framework may be used to evaluate the impact of woody material for estimating mangrove LAI from optical imagery. The model may also be used to quantitatively analyse the mangrove reflectance spectra when including other important factors such as tidal height. |
| 学科主题 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| 电子版国际标准刊号 | 1873-2240 |
| 出版地 | AMSTERDAM |
| WOS关键词 | LEAF-AREA INDEX ; BIDIRECTIONAL REFLECTANCE ; BIOPHYSICAL VARIABLES ; VEGETATION INDEXES ; GLOBAL PRODUCTS ; LAI ESTIMATION ; CLIMATE-CHANGE ; COASTAL ; SCATTERING ; FORESTS |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000795900600002 |
| 资助机构 | Australian Government Research Training Program (RTP) Scholarship ; Office of China Postdoc Council International Postdoctoral Exchange Fellowship [YJ20210322] ; Higher Degree by Research (HDR) ; Remote Sensing Research Centre, School of Earth and Environmental Science, The University of Queensland ; Australian Research Council DECRA Fellowship [DE190101182] ; Australian Research Council [DE190101182] Funding Source: Australian Research Council |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/29043]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.CSIRO, Space & Astron, Kensington, WA 6151, Australia 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.[Niu, Chunyue; Woodgate, William; Phinn, Stuart R.; Roelfsema, Chris M.] Univ Queensland, Remote Sensing Res Ctr, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia |
| 推荐引用方式 GB/T 7714 | Niu, Chunyue,Woodgate, William,Phinn, Stuart R.,et al. Extending a canopy reflectance model for mangroves: A case study in south east queensland, Australia[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,316. |
| APA | Niu, Chunyue,Woodgate, William,Phinn, Stuart R.,Roelfsema, Chris M.,&Su, Yanjun.(2022).Extending a canopy reflectance model for mangroves: A case study in south east queensland, Australia.AGRICULTURAL AND FOREST METEOROLOGY,316. |
| MLA | Niu, Chunyue,et al."Extending a canopy reflectance model for mangroves: A case study in south east queensland, Australia".AGRICULTURAL AND FOREST METEOROLOGY 316(2022). |
入库方式： OAI收割
来源：植物研究所
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