Study on the Diversity of Common Medicinal Plants in Zhang County of Gansu Province

Zhang county is known as 'the millennium rural medicine',knowing the local medicinal resource is the basis for developing medicinal plants.The common resources of medicinal plants in Zhang county based on literature study and expeditionary survey were calculated in this study.The results showed that there were 385 species of medicinal plants belonging to 275 genera and 99 families,in which 304 species were herbs,48 species were shrubs,28 species were magaphanerophytes,5 species were lianas;dominant families were Composiatae,Rosaceae,Ranunculaceae etc,and dominant genera were Artemisia and Polygonum etc.Many parts of medicinal plants could be used as medicinal materials,which were mostly grasses and roots.Therefore,consideration to update of resources should be given to make sure regeneration of resources when collecting the medicinal plants and lay the foundation for the sustainable utilization of medicinal plant.