The world’s biomass is not evenly distributed. The biodiversity of the world is determined by various factors like climate, soil, geology and the evolutionary history of the earth. There are various classification schemes of the world ecological zones, based on criteria. This map shows the world ecological zones based on climate criteria.
This visual exhibits 5 major zones, which are further subdivided to a total of 20. The demarcation of the various zones has been depicted through careful variation in colour intensity. The variation in ocean colour based on bathymetry makes the map more visually pleasing.
Data source: UN Food & Agriculture Organization