Country

United Kingdom: 4 ecoregions. Each with its climate now and toward 2050, and its conservation tier.

All four of the United Kingdom's ecoregions are cool-temperate Palearctic forest, and two are classed as imperiled. Celtic broadleaf forests cover the largest share - the oceanic west and much of Ireland-facing Britain - with the English Lowlands beech forests over the drier southeast, the North Atlantic moist mixed forests along the far northwest fringe, and the Caledon conifer forests marking the native pinewood zone of the Scottish Highlands. The shared character is maritime: mild winters, cool summers, reliable moisture, little climatic extremity. That makes Britain famously forgiving ground for temperate broadleaf trees and woodland garden plants, with the meaningful gradients being oceanic wetness in the west and north versus the warmer, drier beech country of the southeast.