DENR Administrative Order No. 2019-05 implementing Rules and Regulations of Republic Act No. 7586, or the National Integrated Protected Areas System (NIPAS) Act of 1992, as Amended by Republic Act No. 11038, or the Expanded National Integrated Protected Areas System (ENIPAS) Act of 2018.

This Order, consisting of 36 sections and rules, establishes specific policies governing the management of the NIPAS as follows: a) Protected areas and their neighbouring areas shall be contiguous to ensure their integrity; b) Protected areas should complement each other in terms of taxonomic representation, species migration patterns, maintenance of essential ecological processes and life support systems, and efficiency; c) The management plan of protected areas shall be harmonized in consonance with the principles of biological diversity and sustainable development; d) The management of the NIPAS shall contribute to the significant reduction of biodiversity loss. In order to achieve the aforementioned policies of the NIPAS, the following strategies shall be adopted: a) In selecting areas for inclusion in the NIPAS, the conservation priority areas in any identified bio-geographic zones, in both aquatic and terrestrial environments, shall be primarily considered; b) The NIPAS should complement the designation, creation or establishment of similar conservation areas under other domestic laws, and the management regimes of LGUs, local communities, and indigenous cultural communities/indigenous peoples (ICCs/IPs). This must likewise be consistent with, and supportive of the obligations of the Philippines under treaties and international laws; c) The sustainability of the NIPAS depends on the collaboration of all stakeholders through a functional, transparent, accountable, and participatory governance mechanism; the judicious use of the Integrated Protected Arca Fund; fair and equitable benefit-sharing mechanisms; and the development of other means for the sustainable management of protected areas prescribed under the NIPAS Act, as amended.
The following categories of protected areas are established: a) Strict nature reserve; b) Natural park; c) Natural monument; d) Wildlife sanctuary; e) Protected landscapes and seascapes; f) Resource reserve; g) Natural biotic areas; and, h) Other categories established by law, conventions or international agreements which the Philippine Government is a signatory.