SECTION 6.                  Additional Areas to be Integrated to the System. – Notwithstanding the establishment of the initial component of the additional areas with outstanding physical features, anthropological signi cance and biological diversity in accordance with the provisions of Section 5d. SECTION 7.          Disestablishment as Protected Area. – When in the opinion of the DENR a certain protected area should be withdrawn or disestablished, or its boundaries modi ed as warranted by a study and sanctioned by the majority of the members of the respective boards for the protected area as herein established in Section 11, it shall, in turn, advice Congress.  Disestablishment of a protected area under the System or modi cation of its boundary shall take effect pursuant to an act of Congress.  Thereafter, said area shall revert to the category of public forests unless otherwise classi ed by Congress: Provided however, that after disestablishment by Congress, the Secretary may recommend the transfer of such disestablished area to other government agencies to serve other priority programs of national interest. SECTION 8.          Buffer Zones. – For each protected area, there shall be established peripheral buffer zones when necessary, in the same manner as Congress establishes the protected area, to protect the same from activities that will directly and indirectly harm it. Such buffer zones shall be included in the individual protected area management plan that shall prepared for each protected area. The DENR shall exercise its authority over protected areas as provided in this Act on such area and designated as buffer zones. SECTION 9.          Management Plans. – There shall be a general management planning strategy to serve as guide in formulating individual plans for each protected area. The management planning strategy shall, at the minimum, promote the adoption and implementation of innovative management techniques including if necessary, the concept of zoning, buffer zone management for multiple use and protection, habitat conservation and rehabilitation, diversity management, community organizing, socioeconomic and scienti c researches, site-speci c policy development, pest management, and re control. The management planning strategy shall also provide guidelines for the protection of indigenous cultural communities, other tenured migrant communities and sites for close coordination between and among local agencies of the Government as well as the private sector. Each component area of the System shall be planned and administered to further protect and enhance the permanent preservation of its natural conditions. A management manual shall be formulated and developed which must contain the following: an individual management plan prepared by three (3) experts, basic background information, eld inventory of the resources within the area, an assessment of assets and limitations, regional interrelationships, particular objectives for managing the area, appropriate division of the area into management zones, a review of the boundaries of the area, and a design of the management programs. /