
Brazil's President Jair Bolsonaro signed a decree to ban burning throughout the country for two months, government sources said, as the authorities scramble to defuse the Amazon fires which have triggered a global outcry.

Brazilian President Jair Bolsonaro said on Wednesday he would meet with other South American countries to set common policy for defending the Amazon rain forest, while his foreign minister said Brazil should be seen as an environmental hero.

Fires have destroyed 1.2 million hectares of forest and grasslands in Bolivia this year, the government said on Wednesday, though environmentalists claim the true figure is much greater.

France is looking at introducing pesticide-free buffer zones around housing areas after several local mayors defied the government by banning weed killers such as glyphosate in their towns.

The two most sizeable investors in Norway have told global companies to make sure they are not contributing to environmental destruction in the Amazon rainforest of Brazil.

Canada will continue its trade negotiations with Mercosur, the South American trading bloc that includes Brazil, despite demands to call a halt to the talks until more action is taken to protect the Amazon rainforest.

Weak rainfall is unlikely to extinguish a record number of fires raging in Brazil's Amazon anytime soon, with pockets of precipitation through to Sept 10 expected to bring only isolated relief, according to weather data and two experts.

The fires tearing through the Amazon represent a “tipping point” for the health of the rainforest, the head of a top global forestry management body said on Wednesday, urging the world to do more to save the trees.

Peru and Colombia proposed on Tuesday an emergency Amazon summit for countries in the region in order to coordinate a strategy to protect the vast rainforest currently blighted by numerous fires. The Amazon is known as the “planet's lungs” but is suffering from its worst outbreak of fires in years, which has sparked a global outcry.

Bolivia's president Evo Morales gave a half-hearted welcome on Tuesday to a G7 pledge of US$20 million to fight the Amazon wildfires, describing it as tiny. An underwhelmed Morales said the aid from the most industrialized countries was part of the world's obligation to preserve the Amazon rainforest.