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In forestry, periodic annual increment (PAI) is the change in the size of a tree between the beginning and ending of a growth period, divided by the number of years that was designated as the growing period. [1] For sigmoid growth, the graph of PAI increases rapidly and then quickly declines, approaching zero. PAI may go negative if a tree ...
The following outline is provided as an overview of and guide to forestry: Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests and woodlands for associated resources for human and environmental benefits. Forestry is practiced in plantations and natural stands. The science of forestry has ...
The mean annual increment (MAI) or mean annual growth refers to the average growth per year a tree or stand of trees has exhibited/experienced up to a specified age. For example, a 20-year-old tree that has a stem volume of 0.2 m 3 has an MAI of 0.01 m 3 /year.
Today, forest and woodland cover in Uganda stands at 49,000 km 2 or 24% of the total land area. Of these 9,242.08 km 2 is tropical rainforest, 350.60 km 2 are forest plantations and 39,741.02 km 2 is woodland. 30% of these areas are protected as national parks, wildlife reserves or central forest reserves. [1]
Graph of mean annual increment. Biologists use the concept of maximum sustainable yield (MSY) or mean annual increment (MAI), to determine the optimal harvest age of timber. MSY can be defined as “the largest yield that can be harvested which does not deplete the resource (timber) irreparably and which leaves the resource in good shape for ...
Uganda Forestry Working Group (UFWG) is a Uganda-based organization and an informal network of forestry stakeholders, civil society organizations, academic and research institutions engaged in the development and sustainability of the forestry sector in Uganda that are multidisciplinary cutting across several sectors of national development. [1]
The National Forestry Authority was established by the Act of Parliament in 2003 to replace the century-old Forest Department which as a purely government department had failed to address the challenges that the forestry sector was facing in the 1970s through to the 1990s.
In 2022, the National Forestry Authority (NFA) cleared the Fisheries Protection Unit (FPU) of the Uganda People’s Defence Forces to sustainably occupy part (one acre) of Kitubulu Central Forest Reserve in Entebbe Municipality. The FPU was given permission for one year to temporarily establish its headquarters and a storage facility for ...