Haiti-Dominican Republic Borderland
Appalachian Region, Virginia
Valles Caldera National Preserve/Jemez Spring, New Mexico
Desert/Semi-arid Region, Northwest China
Semi-arid grassland in Inner Mongolia Autonomous Region, re-vegetation area in Shaanxi Province, shrubland in Gansu Province, Mu Us Sandland, and Tengger Desert. Most of these fieldwork sites are desolated, sparsely populated wild places.