Brazil's 1990 net committed emissions of 267
106 t C from Amazonian deforestation updated from would be worth US$ 1.3±9.3
billion. An estimated 2.4 109 t C is emitted
globally each year from tropical deforestation
and related land-use changes such as shifting cul-
tivation and clearing of non-forest vegetation,
calculated as the annual average net committed
emissions over the 1981±1990 period