@Article{HoughtonSkNoHaLaCh:2000:AnFlOr,
author = "Houghton, R. A. and Skole, D. L. and Nobre, Carlos Afonso and
Hackler, J. L. and Lawrence, K. T. and Chomentowski, W. H.",
affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
title = "Annual fluxes or carbon from deforestation and regrowth in the
Brazilian Amazon",
journal = "Nature",
year = "2000",
volume = "403",
number = "6767",
pages = "301--304",
month = "Jan.",
keywords = "meteorologia, pasture soils, land use, forest, biomass, budgest.",
abstract = "The distribution of sources and sinks of carbon among the world's
ecosystems is uncertain. Some analyses show northern midlatitude
lands to be a large sink, whereas the tropics are a net source(1);
other analyses show the tropics to be nearly neutral. whereas
northern mid-latitudes are a small sink(2,3). Here we show that
the annual flux of carbon from deforestation and abandonment of
agricultural lands in the Brazilian Amazon was a source of about
0.2 g C yr(-1)over the period 1989-1998 (1 Pg is 10(15)g). This
estimate is based on annual rates of deforestation and spatially
detailed estimates of deforestation, regrowing forests and
biomass. Logging may add another 5-10 percent to this estimate(4),
and fires may double the magnitude of the source in years
following a drought(4), The annual source of carbon from land-use
change and fire approximately offsets the sink calculated for
natural ecosystems in the region(5,6). Thus this large area of
tropical forest is nearly balanced with respect to carbon, but has
an interannual variability of +/- 0.2 PgC yr(-1).",
copyholder = "SID/SCD",
issn = "0028-0836",
language = "en",
targetfile = "Houghton_Annual fluxes or carbon from.pdf",
urlaccessdate = "04 maio 2024"
}