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Contribution of transpiration to forest ambient vapour based on isotopic measurements
Abstract
Using a simple isotope mixing model, we evaluated the relative proportion of water vapour generated by plant transpiration and by soil evaporation at two sites in the Amazon basin. Sampling was carried out at two different soil covers (forest and pasture), in a seasonal tropical rainforest at eastern Amazon where major deforestation is the result of land‐use change, and compared to a less seasonal central Amazon forest. In both forests, vapour from transpiration was responsible for most, if not all, of the water vapour generated in the forest, while it could not be detected above the grassy pastures. Thus the canopy transpiration may be a major source of water vapour to the forest and perhaps to the atmosphere during the dry season. The results are discussed in relation to predictive models based on net radiation that usually are not able to distinguish between transpiration and evaporation.
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Citations
Cited by
Cochrane, M. A. (2003) · Nature · doi:10.1038/nature01437 · Cited by 1,218
Modeling Soil Processes: Review, Key Challenges, and New Perspectives
Vereecken, H., Schnepf, A., Hopmans, J. W., Javaux, M., Or, D., Roose, T., Vanderborght, J., Young, M. H., Amelung, W., Aitkenhead, M., et al. (2016) · Vadose Zone Journal · doi:10.2136/vzj2015.09.0131 · Cited by 833
Climatic and environmental controls on speleothem oxygen-isotope values
Lachniet, M. S. (2009) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2008.10.021 · Cited by 768
The application and interpretation of Keeling plots in terrestrial carbon cycle research
Pataki, D. E., Ehleringer, J. R., Flanagan, L. B., Yakir, D., Bowling, D. R., Still, C. J., Buchmann, N., Kaplan, J. O., & Berry, J. A. (2003) · Global Biogeochemical Cycles · doi:10.1029/2001gb001850 · Cited by 745
Sprenger, M., Leistert, H., Gimbel, K., & Weiler, M. (2016) · Reviews of Geophysics · doi:10.1002/2015rg000515 · Cited by 606
Metadata
- Authors
- MOREIRA, M., STERNBERG, L., MARTINELLI, L., VICTORIA, R., BARBOSA, E., BONATES, L., & NEPSTAD, D.
- Venue
- Global Change Biology
- Publisher
- Wiley
- Published
- 1997-10
- Volume
- 3
- Issue
- 5
- Pages
- 439-450
- ISSN
- 1354-1013 (ISSN-L)
- 1365-2486
- OpenAlex
- W1998407938
- Cited by
- 187
- References
- 0
- FWCI
- 3.14
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- MOREIRA, M., STERNBERG, L., MARTINELLI, L., VICTORIA, R., BARBOSA, E., BONATES, L., & NEPSTAD, D. (1997). Contribution of transpiration to forest ambient vapour based on isotopic measurements. Global Change Biology. https://doi.org/10.1046/j.1365-2486.1997.00082.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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