In what kind of ecosystem have mostly pine or spruce trees?

Ecosystems dominated by pine or spruce trees are typically found in boreal forests, also known as taiga. These forests are characterized by cold climates, long winters, and short summers, which support the growth of coniferous trees that are well-adapted to such conditions. Boreal forests play a crucial role in carbon storage and provide habitat for diverse wildlife. They are primarily located in northern regions, including parts of Canada, Alaska, and Russia.