Abstract:Based on the data obtained from background survey of vegetation in the field, the classification of vegetation in Piankou Nature Reserve, Sichuan Province, was made using geographic imformation system and remote sensing, as well as global positioning system in combination. As a result, six vegetation types (with fifteen formations) were classified, viz. 1. evergreen-and deciduous-broadleaved mixed forest, 2. deciduous broadleaved forest, 3. coniferous and broadleaved mixed forest, 4. subalpine coniferous forest，5. subalpine shrub，and 6．subalpine meadow．A map of vegetation types in the Reserve is given．