A situation where only specified trees in a forest reserve are cut down is known as

The situation where only certain trees in a forest reserve are cut down while leaving other trees intact is known as selective exploitation. In this process, specific trees are identified and marked for cutting, while the remaining trees are left to continue growing. This is done to minimize the impact on the environment and maintain the biodiversity of the forest. Selective exploitation is a sustainable way of managing forests, as it allows for the extraction of timber while ensuring that the forest ecosystem remains healthy and intact.