1. Agricultural land-use trajectories in a cocaine source region:Chapare, Bolivia
2. DMS = 62) Fraction of land in tropical climate zone (based on K�ppen-Geiger climate zones classification);Tropzone*;Source: Gallups, Millenger, and Sachs,1999
3. In general, this classification classifies different area into different climate zones based on temperature and precipitation. TROPZONE is the proportion of land that classifies as type Af (equatorial rainforest and fully humid), Am (equatorial monsoon), or Aw (equatorial savannah with dry winter) in K�ppen-Geiger climate zones;The data for this variable is constructed by Gallups, Millenger, and Sachs,1999