Search for glossary terms (regular expression allowed)
Term Main definition
specific gravity

The ratio of the oven dry weight of wood to the weight of equal volume of water at a given moisture content.


A separation of the wood parallel to the fiber direction, due to the tearing of wood cells.

split rattan

A flat shaped material, stripped from the skin of a rattan pole, with size ranging from 2 to 10 millimeter or wider in width, usually for weaving and binding.

squared timber

All timber squared with an axe or other similar mechanical hand tools in the forest which from the size of the piece and the character of the wood is obviously unfit for use in that form.


A discoloration in wood that may be caused by such diverse agents such as microorganisms, metal or chemicals. The term also applies to materials used to impart color to wood.


A planting stock raised or produced through macropropagation technique such as cutting, layering and marcotting.


A portion of rainfall that is intercepted by vegetation through leaves, branches, and stems and subsequently flows down to the ground.


Strips or boards used to separate the layers of lumber in a pile and thus improve air circulation.

strict nature reserve

An area possessing some outstanding ecosystem, features, and species of flora and fauna of national scientific importance that should be maintained to protect and to preserve nature in its undisturbed state and to preserve nature in its undisturbed state and to preserve ecologically representative examples of the natural environment to ensure their availability for scientific study, environmental to ensure their availability for scientific study, environmental monitoring, education, and for the for the maintenance of genetic resources in a dynamic and evolutionary state.

strict protection zone

A portion of the protected area with high biodiversity value which shall be closed to all human activity except for scientific, ceremonial or religious use by indigenous communities.


(1) The economic value of a standing tree, equivalent to the amount concessionaires earn when a log is sold to the sawmill or the exporter, less the cost of logging. It is used as the net-price valuation in environmental accounting.

Synonyms - stumpage value
stumpage valuation

The process of estimating the value of standing timber for revenue assessment, tax collection and as guide for buying and selling timber.

surface runoff

A portion of runoff water that flows on the ground surface.

sustainable development

Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

sustainable forest management

The process of managing a forest to achieve one or more clearly specified objectives of management with regard to production of a continuous flow of desired forest products and services without undue reduction of its inherent values and future productivity and without undesirable effects on the physical and social environment.