TY - JOUR
T1 - Ecology
T2 - Selective logging in the Brazilian Amazon
AU - Asner, Gregory P.
AU - Knapp, David E.
AU - Broadbent, Eben N.
AU - Oliveira, Paulo J.C.
AU - Keller, Michael
AU - Silva, Jose N.
PY - 2005/10/21
Y1 - 2005/10/21
N2 - Amazon deforestation has been measured by remote sensing for three decades. In comparison, selective logging has been mostly invisible to satellites. We developed a large-scale, high-resolution, automated remote-sensing analysis of selective logging in the top five timber-producing states of the Brazilian Amazon. Logged areas ranged from 12,075 to 19,823 square kilometers per year (±14%) between 1999 and 2002, equivalent to 60 to 123% of previously reported deforestation area. Up to 1200 square kilometers per year of logging were observed on conservation lands. Each year, 27 million to 50 million cubic meters of wood were extracted, and a gross flux of ∼0.1 billion metric tons of carbon was destined for release to the atmosphere by logging.
AB - Amazon deforestation has been measured by remote sensing for three decades. In comparison, selective logging has been mostly invisible to satellites. We developed a large-scale, high-resolution, automated remote-sensing analysis of selective logging in the top five timber-producing states of the Brazilian Amazon. Logged areas ranged from 12,075 to 19,823 square kilometers per year (±14%) between 1999 and 2002, equivalent to 60 to 123% of previously reported deforestation area. Up to 1200 square kilometers per year of logging were observed on conservation lands. Each year, 27 million to 50 million cubic meters of wood were extracted, and a gross flux of ∼0.1 billion metric tons of carbon was destined for release to the atmosphere by logging.
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U2 - 10.1126/science.1118051
DO - 10.1126/science.1118051
M3 - Article
C2 - 16239474
AN - SCOPUS:27144556941
SN - 0036-8075
VL - 310
SP - 480
EP - 482
JO - Science
JF - Science
IS - 5747
ER -