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Rainfall that falls directly through a vegetative canopy or is intercepted by vegetation and then drips to the ground.

tiger grass

A member of the grass family where the inflorescent or flower stalks is used in making broom.


Wood material which include standing trees in a form suitable for construction, carpentry, joinery, or reconversion for manufacturing purposes.

timber harvesting

Removal, extraction, or cutting of timber from natural or plantation forest for human consumption.

Timber License Agreement

A long-term license executed by and between the Secretary of the DENR, on behalf of the government, and the grantee for the harvesting and removal from the public forest of timber and, in appropriate cases, also of other forest products.

Synonyms - TLA
timber stand improvement

Treatments applied before or after harvesting and thinning of saleable products or a forest area, for the purpose of securing maximum, quantity, quality composition, growth rate and condition consistent with other resources and use.

time immemorial

A period of time when as far back as memory can go, certain ICCs or IPs are known to have occupied, possessed in the concept of owner, and utilized a defined territory devolved to them, by operation of customary law or inherited from their ancestors, in accordance with their customs and traditions


The ability of wood to absorb energy, repeated shocks and undergo considerable deformation before breaking.

traditional use

Customary utilization of biological and genetic resources by the local community and indigenous people in accordance with written or unwritten rules, usage, customs and practices traditionally observed, accepted and recognized by them.


A woody and perennial plant, typically large and with a well-defined stem or stems carrying a more or less definite crown; sometimes defined as attaining a minimum diameter of 12.7 centimeters and a minimum height of 4.6 meters at maturity with no branches within 1 meter.

tree farm

Any small forest land or tract of land purposely planted with tree crops.

tree height

The total height of the tree measured from the ground to the tip of the crown.

tree marking

The process of marking trees to be harvested and those to be left to as residual which will form the future crop of timber.

tree park

A particular area within a barangay city or municipality which has been identified by an LGU and delineated by DENR exclusively for growing trees of any kind, flowering ornamental, that have scenic, aesthetic and ecological value.

tropical forest

Any type of forest within the tropics of Cancer and Capricorn.