AN ACT TO SPUR THE PLANTING OF A BILLION TREES THROUGH COMPLEMENTARY TREE PLANTING PROGRAMS OF THE DENR AND VARIOUS GOVERNMENT AGENCIES, LOCAL GOVERNMENT UNITS AND COMMUNITIES, SCHOOLS AND UNIVERSITIES, AND CIVIC AND NON-GOVERNMENTAL ORGANIZATIONS, PROTECTING THE REMAINING NATURAL FORESTS AND FOREST PLANTATIONS, AND CREATING A FUND THEREFOR, AND FOR OTHER PURPOSES