The answer is no. A population is a group of organisms of the same species living in an area at the same time. They’re all different kinds of trees. (I may be wrong so if I am I am so so sorry)
POPULATION IS THE ASSEMBLY OF BEINGS OF A SAME KIND THAT ARE HABITALLY IN THE SAME AREA AND RELATE IN SYNERGY BETWEEN THEM. So, talking about the red oak sugar maple and white spruce trees, they are from the same species and the forest that contains them is considered a population. But we have all kind of population among the other species, plantas, animals and throughout the human beings. Each group of organisms of the same species that live in a particular community constitute biological populations.