Journal ArticleDOI
Tree allometry and improved estimation of carbon stocks and balance in tropical forests
Jérôme Chave,C. Andalo,Sandra Brown,Michael A. Cairns,Jeffrey Q. Chambers,Derek Eamus,H. Fölster,François Fromard,Niro Higuchi,T. Kira,J. P. Lescure,Bruce Walker Nelson,H. Ogawa,H. Puig,B. Riera,Takuo Yamakura +15 more
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TLDR
A critical reassessment of the quality and the robustness of these models across tropical forest types, using a large dataset of 2,410 trees ≥ 5 cm diameter, directly harvested in 27 study sites across the tropics, is provided.Abstract:
Tropical forests hold large stores of carbon, yet uncertainty remains regarding their quantitative contri- bution to the global carbon cycle. One approach to quantifying carbon biomass stores consists in inferring changes from long-term forest inventory plots. Regres- sion models are used to convert inventory data into an estimate of aboveground biomass (AGB). We provide a critical reassessment of the quality and the robustness of these models across tropical forest types, using a large dataset of 2,410 trees ‡ 5 cm diameter, directly harvested in 27 study sites across the tropics. Proportional rela- tionships between aboveground biomass and the prod- uct of wood density, trunk cross-sectional area, and total height are constructed. We also develop a regres- sion model involving wood density and stem diameter only. Our models were tested for secondary and old- growth forests, for dry, moist and wet forests, for low- land and montane forests, and for mangrove forests. The most important predictors of AGB of a tree were, in decreasing order of importance, its trunk diameter, wood specific gravity, total height, and forest type (dry, moist, or wet). Overestimates prevailed, giving a bias of 0.5-6.5% when errors were averaged across all stands. Our regression models can be used reliably to predict aboveground tree biomass across a broad range of tropical forests. Because they are based on an unprece- dented dataset, these models should improve the qualityread more
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Journal ArticleDOI
New handbook for standardised measurement of plant functional traits worldwide
Natalia Pérez-Harguindeguy,Sandra Díaz,Eric Garnier,Sandra Lavorel,Hendrik Poorter,Pedro Jaureguiberry,M.S. Bret-Harte,William K. Cornwell,Joseph M. Craine,Diego E. Gurvich,Carlos Urcelay,Erik J. Veneklaas,Peter B. Reich,Lourens Poorter,Ian J. Wright,P. Ray,Lucas Enrico,Juli G. Pausas,A. C. de Vos,Nina Buchmann,Guillermo Funes,Fabien Quétier,Fabien Quétier,John G. Hodgson,Ken Thompson,H. D. Morgan,H. ter Steege,M.G.A. Van Der Heijden,Lawren Sack,Benjamin Blonder,Peter Poschlod,Maria Victoria Vaieretti,Georgina Conti,A. C. Staver,S. Aquino,Johannes H. C. Cornelissen +35 more
TL;DR: This new handbook has a better balance between whole-plant traits, leaf traits, root and stem traits and regenerative traits, and puts particular emphasis on traits important for predicting species’ effects on key ecosystem properties.
Journal ArticleDOI
Towards a worldwide wood economics spectrum
Jérôme Chave,David A. Coomes,Steven Jansen,Simon L. Lewis,Nathan G. Swenson,Amy E. Zanne,Amy E. Zanne +6 more
TL;DR: It is suggested that, similar to the manifold that tree species leaf traits cluster around the 'leaf economics spectrum', a similar 'wood economics spectrum' may be defined.
Journal ArticleDOI
Improved allometric models to estimate the aboveground biomass of tropical trees
Jérôme Chave,Maxime Réjou-Méchain,Alberto Búrquez,E. N. Chidumayo,Matthew S. Colgan,Welington Braz Carvalho Delitti,Alvaro Duque,Tron Eid,Philip M. Fearnside,Rosa C. Goodman,Matieu Henry,Angelina Martínez-Yrízar,Wilson A. Mugasha,Helene C. Muller-Landau,Maurizio Mencuccini,Bruce Walker Nelson,Alfred Ngomanda,Euler Melo Nogueira,Edgar Ortiz-Malavassi,Raphaël Pélissier,Pierre Ploton,Casey M. Ryan,Juan Saldarriaga,Ghislain Vieilledent +23 more
TL;DR: This work analyzed a global database of directly harvested trees at 58 sites, spanning a wide range of climatic conditions and vegetation types, and found a pantropical model incorporating wood density, trunk diameter, and the variable E outperformed previously published models without height.
Journal ArticleDOI
Monitoring and estimating tropical forest carbon stocks: making REDD a reality
TL;DR: In this article, a range of methods available to estimate national-level forest carbon stocks in developing countries are reviewed, including ground-based and remote-sensing measurements of forest attributes using allometric relationships.
Journal ArticleDOI
Estimated carbon dioxide emissions from tropical deforestation improved by carbon-density maps
Alessandro Baccini,Scott J. Goetz,Wayne S. Walker,Nadine Laporte,M. Sun,Damien Sulla-Menashe,J. L. Hackler,Pieter S. A. Beck,Ralph Dubayah,Mark A. Friedl,Srikanta Samanta,Richard A. Houghton +11 more
TL;DR: In this paper, the authors provided the most detailed estimate of the carbon density of vegetation and associated carbon dioxide emissions from deforestation for ecosystems across the tropics across the world, including tropical rainforests.
References
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Book
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TL;DR: The second edition of this book is unique in that it focuses on methods for making formal statistical inference from all the models in an a priori set (Multi-Model Inference).
Journal ArticleDOI
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Journal ArticleDOI
A general model for the structure and allometry of plant vascular systems
Geoffrey B. West,Geoffrey B. West,James H. Brown,James H. Brown,Brian J. Enquist,Brian J. Enquist +5 more
TL;DR: In this paper, an integrated model for the hydrodynamics, biomechanics and branching geometry of plants, based on the application of a general theory of resource distribution through hierarchical branching networks, is presented.
Related Papers (5)
Improved allometric models to estimate the aboveground biomass of tropical trees
Jérôme Chave,Maxime Réjou-Méchain,Alberto Búrquez,E. N. Chidumayo,Matthew S. Colgan,Welington Braz Carvalho Delitti,Alvaro Duque,Tron Eid,Philip M. Fearnside,Rosa C. Goodman,Matieu Henry,Angelina Martínez-Yrízar,Wilson A. Mugasha,Helene C. Muller-Landau,Maurizio Mencuccini,Bruce Walker Nelson,Alfred Ngomanda,Euler Melo Nogueira,Edgar Ortiz-Malavassi,Raphaël Pélissier,Pierre Ploton,Casey M. Ryan,Juan Saldarriaga,Ghislain Vieilledent +23 more