Start Tropical Dry Tropical Wet Mean Annual Precipitation greater than 2000 mm Mean Annual Precipitation Less than or equal to 1000 mm Elevation greater than or equal to 1000 m Montane Moist Tropical Moist Long Dry Season IPCC Climate Classification for Tropical Regions (Adapted from 2003 GPG) no yes Mean Annual Precipitation greater than 1000 mm Montane Dry yes no Dry Season more than 5 months Tropical Moist Short Dry Season no yes no

Start Wetland Soils Sandy Soils Greater than 70% sand and less than 8% clay Aquic Soil Histosols Andisols Spodsols Mollisols, Vertisols, high-base status Alfisols, Aridisols, Inceptisols Organic Soils Volcanic Soils Spodic Soils High Activity Clay Soils Low Activity Clay Soils IPCC Soil Classification Based on USDA Taxonomy (IPCC GPG 2003) yes no yes no

Start Wetland Soils Sandy Soils Greater than 70% sand and less than 8% clay Gleysols Podzols Spodsols Volcanic Soils Spodic Soils High Activity Clay Soils Low Activity Clay Soils No Yes No Yes Leptosols, Vertisols, Kastan- ozems, Chernozems, Phaeozems,Luvisols,,Alisol s, Albeluvisols, Solonetz, Calcisols,Gypsisols, Umbrisols, Cambi- sols, Regosols Andosol s IPCC Soil Classification Based on World Soils Taxonomy (IPCC GPG 2003) Histosols Organic Soils Yes No