Leaders of the Group of Seven nations said Sunday they are preparing to help Brazil battle fires burning across the Amazon region and repair the damage as tens of thousands of soldiers got ready to join the fight against blazes that have caused global alarm.

Fires are common during Brazil's dry season, but this year has set an alarming record. The country's National Space Research Institute, which monitors deforestation, has recorded more than 77,000 wildfires in Brazil this year. That is an 85% rise over last year, and about half of the fires have been in the Amazon region.