Investigation on the rare and endangered wild food plants in the Changbai Mountains

Research for three years,it was known that Changbai Mountain area was rich in rare and endangered wild food plants There are 30 families,43 genera and 53 species in all. Among them,detailed composition is as follows:endangered species have 7 famies,7 genera,9 species, vulnerable species have16 famies,19 genera,21 species, rare species have16 famies,17 genera,23 species, primary protection species have 7 famies,7 genera,9 species,secondary protection species have 13 famies,15 genera,15 spescie,tertiary protection species have 19 famies,23 genera,29 species. After analyzed the reason about the formation of rare and endangered food plants and known the present condition of them , some concrete protective suggestion are put forward.