摘要
“A few flaps of the wings of a butterfly in the tropical rainforest of the Amazon Basin in South America could cause a tornado in Texas two weeks later,”goes the explanation.Although the“butterfly effect”is not an ecological theory,the Amazon rainforest,dubbed the“lungs of the Earth,”has unparalleled ecological significance globally.The Amazon is the largest and most biologically diverse rainforest on the planet,but in recent years climate change,forest fires,deforestation and other factors have exerted enormous ecological pressure on it.This poses a huge challenge for the global ecosystem.