5. Eliminate the net loss of forest coverage in Brazil by 2015 Specification of the Objective: as well as preserving forests at the levels stipulated in the previous objective, double the area of forest plantation from 5.5 million ha to 11 million ha in 2020, of which two million ha with native species. Native forests have an intrinsic value that is greater than that currently perceived for environmental services. They hold an incalculable genetic heritage of which the large part is still unknown. Forests plantation, whether for the purposes of the reconstitution of eco-systems or for economic use, create very significant environmental services, since they preserve water flows, reduce or prevent rivers and lakes siltation, improve the micro-climate and allow the preservation of native species of fauna. Homogenous forests create products that substitute the use of numerous non-renewable naural resources, such as coal and raw materials for civil construction, as well as reducing economic pressure on the native forests themselves.