Abstract: Twenty-three species of common garden plants were selected as experimental materials to measure instantaneous net photosynthetic rate and instantaneous transpiration rate of leaves in urban park green space with regional cultural characteristics in Harbin.The carbon sequestration,oxygen release and cooling and humidification of twenty-three common garden plants were studied and evaluated by GGE biplot,in order to provide reference for the selection of plants in urban parks with regional cultural characteristics.The results showed that the capacity of carbon sequestration,oxygen release,cooling and humidification per unit land area was greater for tree than shrub,and broadleaf than conifer.GGE biplot analysis showed that Harbin Music Park was the best sample plot to identify the ecological benefits of tree species.Betula platyphylla,Populus alba ‘Berolinensis’,Prunus cerasifera Ehrhar．‘Pissardii’were the most adaptable tree species,which were sensitive to environmental changes in park green space.Thirteen species with the best ecological stability were selected,which were Populus alba ‘Berolinensis’,Betula platyphylla,Forsythia mandshurica,Prunus cerasifera Ehrhar．‘Pissardii’,Ulmus pumila,Quercus mongolica,Ulmus pumila ‘Jinye’,Acer ginnala,Juglans mandshurica,Salix matsudana,Sabina chinensis ‘Dandong’,Prunus armeniaca,Pruns salicina.