by Guilherme B. R. Lambais
Establishing the foundations of human development without deforestation is undeniably one of the backbones for safeguarding the economic system and the preservation of the species. Today it is known that life on Earth is a complex system and, henceforth, on the threshold of order and disorder. If unrestrained deforestation continues to occur and this threshold is surpassed, while endangering numerous species, it will also create new risks to the environment and the process of evolution itself, including the continuity of human life.
The Earth can be conceived as having nine thresholds, which together form the planetary boundaries in relation to a safe operating space for humanity. These are considered to be: (1) climate change;
(2) the rate of biodiversity loss (terrestrial and marine); (3) the interference with the nitrogen and phosphorus cycles; (4) stratospheric ozone depletion; (5) ocean acidification; (6) global fresh-water use;
(7) the change in land-use; (8) chemical pollution; and (9) atmospheric aerosol loading. The boundaries in three systems— the rate of biodiversity loss, climate change and the human interference with the nitrogen cycle—have already been exceeded (Rockström et al., 2009). Deforestation is assumed to be one of the main causes for exceeding these boundaries.