On the Pacific coast coniferous forests grow the tallest stand of trees in the world called the redwoods. These trees form a narrow zone in a fog belt along the northern California coast. Many of these trees are higher than 300 feet. The tallest redwood in the world is 368 feet tall. These trees can have a diameter of five to eight feet.
Another tree on the Pacific coast is the Douglas Fir, which is best developed along the coasts of British Columbia, Washington, Oregon, and Northern California. This tree is the world's most valuable timber species. Other important pines include the western white, sugar, ponderosa, and jeffrey pine.
In the coniferous forest, there are problems with acid rain, mainly in the regions of northern Asia and Canada. Acid rain effects the soil making it unlivable for the trees which cause great destruction for the homes of the animals. The logging of the forest is an issue that has been brought up by many organizations geared toward helping the forest animals. By destroying the forest, where animals survive by using the trees as hiding places and food sources many creatures will become endangered or extinct. These health issues are a major concern for the plants, animals, and humans of the world.