Abstract: Ecological tourism has been becoming one of the developing direction of world tourism . The research on the essence issues of ecological tourism resource in our country is still weak. Based on the action of our country's tourism resource classification and evaluation, the establishment of the new national standard and the abundant experience of long-term practice research,the author put forward the characteristic, classification and evaluation system of ecologyical tourism resource put forward . The essence issues have special significance to western China whose ecological environment is relatively weak in our country.

Key words: Shenyang city, Seed plant, Flora, Vegetation types