Despite advances in Earth observation and modeling, estimating tropical biomass remains a challenge. Recent work suggests that integrating satellite measurements of canopy height within ecosystem models is a promising approach to infer biomass. We tested the feasibility of this approach to retrieve aboveground biomass (AGB) at three tropical forest sites by assimilating remotely sensed canopy height derived from a texture analysis algorithm applied to the high-resolution Pleiades imager in the Organizing Carbon and Hydrology in Dynamic Ecosystems Canopy (ORCHIDEE-CAN) ecosystem model. While mean AGB could be estimated within 10% of AGB derived from census data in average across sites, canopy height derived from Pleiades product was spatially too smooth, thus unable to accurately resolve large height (and biomass) variations within the site considered. The error budget was evaluated in details, and systematic errors related to the ORCHIDEE-CAN structure contribute as a secondary source of error and could be overcome by using improved allometric equations.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/625358 |
| Date | 16 July 2017 |
| Creators | Joetzjer, E., Pillet, M., Ciais, P., Barbier, N., Chave, J., Schlund, M., Maignan, F., Barichivich, J., Luyssaert, S., Hérault, B., von Poncet, F., Poulter, B. |
| Contributors | Univ Arizona, Dept Ecol & Evolut Biol, Department of Ecology; Montana State University; Bozeman Montana USA, Department of Ecology; Montana State University; Bozeman Montana USA, Laboratoire des Sciences du Climat et de l'Environnement; LSCE-IPSL (CEA-CNRS-UVSQ); Gif-sur-Yvette France, IRD UMR AMAP; Botany and Modeling of Architecture of Plants and Vegetations; Montpellier France, Laboratoire Evolution et Diversité Biologique; Toulouse France, European Space Research and Technology Centre; European Space Agency; Nordwijk Netherlands, Laboratoire des Sciences du Climat et de l'Environnement; LSCE-IPSL (CEA-CNRS-UVSQ); Gif-sur-Yvette France, Instituto de Conservación, Biodiversidad y Territorio; Universidad Austral de Chile; Valdivia Chile, Department of Ecological Sciences; Vrije Universiteit (VU); Amsterdam Netherlands, CIRAD; UMR Ecologie des Forêt de Guyane; Kourou France, Airbus Defence and Space; Immenstaad Germany, Department of Ecology; Montana State University; Bozeman Montana USA |
| Publisher | AMER GEOPHYSICAL UNION |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | ©2017. American Geophysical Union. All Rights Reserved. |
| Relation | http://doi.wiley.com/10.1002/2017GL074150 |
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