Some Observations on Group Regeneration

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Abstract
The history of the gradual change of thought towards the irregular type of forest and from the selection to the group-selection system in Britain is briefly indicated. Suggested definitions are given in regard to the nomenclature for different sizes of felling areas in group-selection working. Statistics are recorded for climatic influences including temperature, solar radiation, and the sun's seasonal azimuths and altitudes; the values for daily totals of total solar radiation on a horizontal surface are of value in comparing conditions for group regeneration throughout Britain. There are some observations of the effect of wind and precipitations in gaps, and a series of preliminary measurements of light intensity in group-regeneration gaps in Cawdor Wood and in the Forest of Ae. There are further observations on the size, shape, and orientation of regeneration gaps. It is suggested that if the group-selection system comes to be used in Britain, then suitable management will have to be evolved because of the very diverse climatic conditions in the forest areas of Britain.

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