Human land and plant use: Impacts on botanical diversity and vegetation structure. A case study from Na Haeo, Northeast Thailand

barbecho biodiversidad biodiversity botanical composition composition botanique comunidades vegetales cosecha cultivo migratorio fallow farmland forest grazing forest land gestion des ressources harvesting land use nonwood forest products oryza pastoreo en el bosque plant communities produit forestier non ligneux resource management shifting cultivation soil sol suelo tailandia terrain forestier terre agricole thailand tierras forestales tropical forests utilisation des terres