Synthesizing different perspectives on the value of urban ecosystem services

摘要

A 2011 Arbor Day campaign by the Chicago-area Morton Arboretum and municipal, civic, and corporate partners aimed to raise citizen awareness of the value of trees by placing tags on newly planted trees in major pedestrian areas that estimated the monetary value of environmental benefits they would provide (Fig. 1). A major tree planting effort begun under former Mayor Richard M. Daley has added more than 600,000 trees to Chicago's urban forest, which now counts about 3.5 million trees. The effort is motivated by an increasing awareness of the benefits that trees bring to human health, translating into economic development prospects, quality of life, and reputation of the city (City of Chicago, 2011).