Deforestation in the Amazon destroyed an area bigger than Spain from 2000 to 2018, wiping out eight percent of the world's largest rainforest, according to a study released Tuesday. 

The Amazon plays a vital role in curbing climate change, but destruction of the rainforest has only accelerated in recent years, found the study by the Amazon Geo-Referenced Socio-Environmental Information Network (RAISG).

Since the turn of the millennium, 513,016 square kilometers of the rainforest have been lost, according to the updated Amazon atlas produced by the organization, a consortium of groups from across the region.

"The Amazon is far more threatened than it was eight years ago," RAISG said in a statement.

The consortium found that after making gains against deforestation early in the century, the Amazon region has again slipped into a worrying cycle of destruction.

Deforestation hit a high of 49,240 square kilometers of forest loss in 2003 -- a record for this century -- then eased to a low of 17,674 square kilometers in 2010, the report said.

But the destruction has since surged to startling levels.

"Deforestation has accelerated since 2012. The annual area lost tripled from 2015 to 2018," the study found.

"In 2018 alone, 31,269 square kilometers of forest were destroyed across the Amazon region, the worst annual deforestation since 2003."

The destruction is fueled by logging, farming, ranching, mining and infrastructure projects on formerly pristine forest land.

The report comes as world leaders prepare for a virtual summit this weekend aimed at breathing new life into the 2015 Paris climate accord, whose goals on slowing the warming of the planet are currently set to be missed.

Forests such as the Amazon play a vital role in controlling climate change because they absorb carbon from the atmosphere.

However, when their trees die or burn, they release carbon back into the environment.

The Amazon stretches across eight South American countries -- Brazil, Colombia, Peru, Bolivia, Ecuador, Venezuela, Suriname and Guyana -- and the territory of French Guiana.

Brazil, which holds most of the Amazon -- about 62 percent -- is also responsible for the worst deforestation, the study found: 425,051 square kilometers from 2000 to 2018.

The destruction in Brazil has only accelerated since far-right President Jair Bolsonaro took office in 2019.

Deforestation in the Brazilian Amazon surged to a 12-year high of 11,088 square kilometers from August 2019 to July 2020, according to government figures.

That was a 9.5-percent increase from the previous year, when deforestation also hit a more than decade-long high.

Deforestation is also surging in Bolivia and Colombia, RAISG found. Bolivia lost 27 percent of its Amazon forest cover to fires from 2000 to 2018, it said.