The DENR has a policy of encouraging landholders to plant trees, and where practicable to relax all impediments to the harvest and transport of trees. A clearly defined set of regulations applies nationally to the harvest and disposition of trees planted in private land. This policy involves a balance between encouraging reforestation and preventing loss of natural forests. Some differences in regulations exist between premium species and benguet pine as against other species including those commonly grown in plantations. While there is no policy of levying charges for tree registration, in some cases a contribution is required for the unfunded costs of the DENR officer who inspects, maps and certifies the plantation. Depending on volume of timber transported, approval may be given by the CENRO or may be required from the Secretary. Forest policy continues to evolve, and greater facilitation of plantation forestry is a policy objective.