<P> In Eastern North America, there are scattered pockets of temperate rainforest also exist along the Allegheny Plateau and adjacent parts of the Appalachian Mountains from West Virginia to New England . These areas include sections of West Virginia, Western Pennsylvania, as well as Western Upstate New York and the Adirondack Mountains . A good example of these forests are found in Zoar Valley in Western New York (nearest major city is Buffalo, New York), Cook Forest State Park within the Allegheny National Forest (nearest major city is Pittsburgh), and Cathedral State Park in West Virginia . </P> <P> In Eastern Asia, there are scattered pockets of temperate rainforest in what is known as the Russian Far East (Ussuri, Outer Manchuria, Sakhalin) in Asia where the climate is also continental in nature, but get enough precipitation and cloud cover to harbor significant pockets of temperate rainforest . Like Eastern North America, much precipitation is in the form of rain and snow . The mountainous coniferous forests of the Changbai Mountains bordering China and North Korea are also a good example, containing some of the richest high - elevation coniferous evergreen forests in East Asia . </P> <P> A portion of the temperate rain forest region of North America, the largest area of temperate zone rain forests on the planet, is the Pacific temperate rain forests ecoregion which occur on west - facing coastal mountains along the Pacific coast of North America, from Kodiak Island in Alaska to northern California, and are part of the Nearctic ecozone . In the different system established by the Commission for Environmental Cooperation, this same general region is classed as the Pacific Maritime Ecozone by Environment Canada and as the Marine West Coast Forest and Northwestern Forested Mountains Level II ecoregions by the United States Environmental Protection Agency . In terms of the floristic province system used by botany, the bulk of the region is the Rocky Mountain Floristic Region but a small southern portion is part of the California Floristic Province . </P> <P> Sub-ecoregions of the Pacific temperate rain forest ecoregion as defined by the WWF include the Northern Pacific coastal forests, Queen Charlotte Islands ecoregion, Vancouver Island ecoregion, British Columbia mainland coastal forests, Central Pacific coastal forests, Southern Cascades forests ecoregion, Klamath - Siskiyou coastal forests, and Northern California coastal forests ecoregions . They vary in their species composition, but are all predominantly coniferous, sometimes with an understory of broadleaved trees and shrubs . Most of the precipitation occurs in winter but summer fogs moisture is extracted by the trees and produces a fog drip keeping the forest moist . The Northern California coastal forests are home to the Coast Redwood (Sequoia sempervirens), the world's tallest tree . In the other ecoregions, Coast Douglas - fir (Pseudotsuga menziesii var . menziesii), Sitka Spruce (Picea sitchensis), Western Hemlock (Tsuga heterophylla) and Western redcedar (Thuja plicata) are the most important tree species . A common feature of Pacific temperate rain forests of North America is the Nurse log, a fallen tree which as it decays, provides ecological facilitation to seedlings . Trees such as the Coast Douglas - fir, Western Hemlock, Western Red Cedar, Pacific Yew, and Vine Maple are more closely related to coniferous and deciduous trees in the temperate forests of East Asia . </P>

Where is the worlds largest rain forest located