Third Cycle of the Field Data Collection Survey for the National Forest Inventory (NFI) of Great Britain.

Survey work for the third 5-year cycle of field data collection for the National Forest Inventory (NFI) of Great Britain. The National Forest Inventory (NFI) programme monitors woodland and trees within Great Britain. It involves a 5-year cycle, rolling programme of in-depth surveys designed to provide accurate information about the size, distribution, composition and condition of Great Britain's forests and woodlands, and also about the changes taking place through time. The NFI is essential for developing and monitoring the policies and guidance that support the sustainable management of forest and woodland. Forest Research manages the NFI programme and is responsible for this procurement. NFI survey contractors will gather a variety of information, such as tree species, heights and ages, and the woodland area within each 1-ha sample square. They will also input the survey results data and information directly into a Forest Research geo database programme (part of Forester GIS).