| Term |
Definition |
French |
|
Undercutting |
Root-pruning of nursery stock in situ, particularly by horizontal cut. |
Cernage |
|
Underplant |
Young trees used for underplanting. |
Plant de sous-étage |
|
Underplanting |
Planting young trees under the canopy of an existing stand. |
Plantation en sous-étage |
|
Understorey |
The lower level of vegetation in a forest. Usually formed by ground vegetation (mosses, herbs and lichens), herbs and shrubs. |
Sous-étage |
|
Understory protection |
Removal of mature trees while damage to the understory is kept to a minimum. |
Protection du sous-étage |
|
Undesirable species |
Species that conflict with or do not contribute to the management objectives. |
Essences indésirables |
|
Uneven-aged |
Of a forest, stand, or forest type in which intermingling trees differ markedly in age. The differences in age permitted in an uneven-aged stand are usually greater than 10-20 years. |
Inéquienne |
|
Uneven-aged system |
A silvicultural system in which stands have an uneven-aged structure. |
Régime inéquienne |
|
Univoltine |
Having only one generation per season. |
Univoltin |
|
Unmerchantable |
Of a tree or stand that has not attained sufficient size, quality, and/or volume to make it suitable for harvesting. |
Non marchand |
|
Uprooting |
The removal of trees with their roots by detaching or breaking the roots below the ground surface. |
Déracinage |
|
Urban forest |
The trees, forests, and associated organisms that grow near buildings and in gardens, green spaces, parks, and golf courses located in village, town, suburban, and urban areas. |
Forêt urbaine |
