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buffer zone

Identified areas outside the boundaries of and immediately adjacent to designated protected areas that need special development control in order to avoid or minimize harm to the protected area.


A bamboo species having an erect and thin-walled culm and used (by paper mills in the manufacture of bleach paper) for sawali making, basketry, fences, musical instruments, etc. Scientific name: Schizotachyum lumampao.

built-up area

Composed of areas of intensive use with much of the land covered by structures. It includes cities, towns, villages, strip developments along highways, transportation, power, and communication, facilities, and areas occupied by mills, shopping centers, etc.


The largest native palm species found in the Philippines, with trunks attaining a diameter of 1 meter, height of 20 meters, and with large fan-shaped leaves from which buri braids and raffia are made. Scientific Name: Corypha elata.

buri braids

Interwoven buri leaves, usually bundled in 3 strips, used as raw material for the manufacture of hats, mats, bags, baskets, etc.

buri raffia

Very fine white fibers produced from stripping the young stalks of unopened buri leaves.


A swirl or twist in the grain of wood that usually occurs near a knot but does not contain a knot.