An analysis of high-resolution satellite data by the Carnegie Institution’s Department of Global Ecology found that the logging plan, combined protection of other forests, and the establishment of territories for indigenous peoples helped keep large-scale rain forest damage in check between the years 1999 and 2005.

The researchers, however, found an increase in forest disturbance in two areas of the jungle where the forests are accessible by roads.

"We found that only 1 to 2 percent of this disturbance in Peru happened in natural protected areas," lead author Paulo Oliveira said Friday in a release. "However, there was substantial forest disturbance adjacent to areas set aside for legal logging operations. This leakage of human activity outside of logging concessions is a concern."

The report was published online in the journal Science Express.