Climatic Effects of Amazonian Deforestation: Some Results from ABRACOS
نویسندگان
چکیده
منابع مشابه
Impact of Amazonian deforestation on atmospheric chemistry
[1] A single-column chemistry and climate model has been used to study the impact of deforestation in the Amazon Basin on atmospheric chemistry. Over deforested areas, daytime ozone deposition generally decreases strongly except when surface wetness decreases through reduced precipitation, whereas nocturnal soil deposition increases. The isoprene and soil nitric oxide emissions decrease althoug...
متن کاملTemporal fluctuations in Amazonian deforestation rates
ROBERT M. EWERS*, WILLIAM F. LAURANCE AND CARLOS M. SOUZA JR Imperial College London, Si/wood Park Campus, Ascot, Berkshire SL5 7PY, UK, Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Republic of Panama and Instituto do Homem e Ambiente da Amazonia, Caixa Postal 5101, CEP 66613-397, Be/em, Para, Brazil Date submitted: 22 May 2008; Date accepted: 25 September 2008; ...
متن کاملThresholds of species loss in Amazonian deforestation frontier landscapes.
In the Brazilian Amazon, private land accounts for the majority of remaining native vegetation. Understanding how land-use change affects the composition and distribution of biodiversity in farmlands is critical for improving conservation strategies in the face of rapid agricultural expansion. Working across an area exceeding 3 million ha in the southwestern state of Rondônia, we assessed how t...
متن کاملThe total economic value of Amazonian deforestation , 1978 – 1993
National income accounting has been criticized because of its failure to encompass the notion of sustainability. Several studies address this problem through ‘green’ income accounting — i.e. by adjusting conventionally measured GDP for reduction in a given country’s ‘stock’ of natural resources. These studies generally base value on the unit net price of the resource. Other studies go beyond ne...
متن کاملThe impact of Amazonian deforestation on Amazon basin rainfall
We completed a meta-analysis of regional and global climate model simulations (n=96) of the impact of Amazonian deforestation on Amazon basin rainfall. Across all simulations, mean (±1σ) change in annual mean Amazon basin rainfall was 12 ± 11%. Variability in simulated rainfall was not explained by differences in model resolution or surface parameters. Across all simulations we find a negative ...
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ژورنال
عنوان ژورنال: Bulletin of the American Meteorological Society
سال: 1997
ISSN: 0003-0007,1520-0477
DOI: 10.1175/1520-0477(1997)078<0823:ceoads>2.0.co;2