Abstract:

The urban forest structure of Hefei, the capital city of Anhui Province, was investigated using sample method in the paper. The results showed that in the study area of 23 km² in the city there are 350 thousand trees and totally 31741 t for biomass. Based on biomass or basal area, the trees were equivalent to 497 hm² forestland. Meanwhile the species composition, DBH classes, health condition, biomass and leaf area of the tree community for different land uses were analyzed. In the urban forest of Hefei city, 10 top species occupied almost 80% of tree individuals; almost 50 percent of trees were classified as small tree (DBH<10 cm); most of trees (84%) had good or medium health level. For this situation, the study area had about 21%～22% of forest land cover and needed to increase 16～20 hm² of forest land at least to get 30% of forest land cover. The tree community in the study area could remove CO₂ of 12483 t from atmosphere each year.

Key words: Urban forest, Structure, C balance, Hefei