The data confirms a feared reversal in what had been steady progress over the past decade against destruction of the world’s largest rainforest.
Satellite data for the 12 months through the end of July 2013 showed that deforestation in the region climbed by 28% compared with a year earlier.
Although scattered, the total land cleared during the period amounted to 2,250 sq miles (5,850 sq km).
The figure, boosted partly by expanding farms and a rush for land around big infrastructure projects, fulfilled predictions by scientists and environmentalists that destruction was on the rise again.
“You can’t argue with numbers,” said Marcio Astrini, co-ordinator for the Amazon campaign at the Brazilian chapter of Greenpeace. “This is not alarmist – it’s a real and measured inversion of what had been a positive trend.”
Brazil tracks the amount of land cleared each year as part of its efforts to protect the Amazon, a jungle the size of western Europe.
The measurement year for the satellite data starts each August, during the Amazon dry season, when the skies are cloud-free and clear aerial images can be recorded.
The reasons for the rebound in deforestation are numerous. Changes to Brazil’s forestry laws have created uncertainty among landowners regarding the amount of woodland they must preserve.
High global prices for agricultural commodities have also encouraged growers to cut trees to make way for farmland.
Loggers, squatters and others are also rushing to exploit land around big infrastructure projects, including railways, roads and hydroelectric dams under construction in the Amazon.
Izabella Teixeira, Brazil’s environment minister, dismissed criticisms that government policies had led to the increase.
She pointed to the long-term decrease in deforestation over the past decade and said the overall trend was “positive”.
The government’s goal, Teixeira said in Brasilia, was “to eliminate illegal deforestation in the Amazon”.
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