WASP I Z1B (Rock desert) designed for the regions above the tree line and tundra zones from the low lying scrub to bare rock and boulder, but also to some extent those that are snow covered.
WASP I Z2 (Low growing vegetation) for the transition area between the remaining regions particularly Z 1a and Z 3a with grass and bush lands and here and there rocks and boulders.
WASP I Z3A (High vegetation without snow cover) for the assignment in areas with higher vegetation from deciduous and coniferous forests to tropical jungle with flexibility for the boundary zones to Z 2 like bush, agricultural or grass lands.
