Zonobiome of the Warm-Temperate Humid Climate Region

Abstract

Zonobiome V cannot be sharply delineated since it is a transitional zone between the tropical-subtropical and the typical temperate regions, although too large to be considered an ecotone. Two subzonobiomes can be distinguished:

• 1. A very humid subzonobiome with rainfall at all times of year or with a minimum in the cool season. The principal vegetational period, which is invariably wet, is oppressive due to high temperatures. The regions involved lie on the eastern sides of the continents between latitudes 30° and 35° in both the Northern and Southern Hemisphere and are influenced by trade and monsoon winds. Temperatures drop quite severely in the cool season, and there may even be frost, but there is no cold season. Nevertheless, the vegetation spends the winter in a resting state.

• 2. A subzonobiome with rainfall occurring principally in winter and no summer-drought season. This region lies along the western seaboard of the continents, nearer to the poles than the first, adjoining the wet variant of ZB IV with winter rain.