YIELD

Amount of product output recovered from a quantity of raw material input in forest product industries. An estimate of the amount of wood that may be harvested from a particular type of forest stand by species, site, stocking, and management regime at various ages.

YIELD TAX

A tax levied as a percentage of harvested stumpage value.

ZANJA

Spanish word for ditch.

ZERO DISCHARGE OF HAZARDOUS CHEMICALS (ZDHC)

The Zero Discharge of Hazardous Chemicals Programme (ZDHC) is a multi-stakeholder initiative focused on eliminating hazardous substances from the fashion supply chains and sourcing sustainable alternatives to conventional chemicals. The collaborators include brands, testing facilities, research institutes and chemical companies, with the collective aim to reduce environmental pollution and health hazards directly linked to the […]

ZERO EMISSIONS COMMITMENT

The zero emissions commitment is the climate change commitment that would result from setting anthropogenic emissions to zero. It is determined by both inertia in physical climate system components (ocean, cryosphere, land surface) and carbon cycle inertia.

ZERO WASTE DESIGN

Zero waste is an approach to fashion design that eliminates all fabric waste from a garment. Zero waste products require fewer resources than conventional styles and aim to address the average 15% fabric waste created during production. Zero waste fashion design adopts the width of a cloth as the space within which to design the […]

ZERO-CREDIT REPORTING PERIOD

To provide flexibility for project developers in instances where verification is not practical or economical for a specific reporting period/verification period, developers of projects other than forest and urban forest projects may choose to delay verification on the condition that they acknowledge no CRTs will be issued for any period of time that falls outside […]

ZERO-HOUR CONTRACT

A zero-hour contract is an arrangement between a worker and an employer where the employer has no obligation to guarantee a minimum of working hours and the worker is not obliged to accept the working hours offered. While zero-hour contracts may be suitable in some cases, such as to cover seasonal peaks and to enable […]

ZONE OF AERATION

The portion of the ground from the Earth’s surface down to the water table- the zone of aeration is not saturated with water because its pores are filled partly by air and partly by water.

ZONE OF INFLUENCE

Area surrounding a pumping well within which the water table has been changed due to ground water withdrawal.