5McKinley D C, Ryan M G, Birdsey R A, et al. Asynthesis of current knowledge on forests and carbonstorage in the United States[J]. Ecological Applications ,2011, 21(6): 1902-1924.
7Dobbs C, Escobedo F J , Zipperer W C. Aframework for developing urban forest ecosystemservices and goods indicators[J]. Landscape and UrbanPlanning , 2011, 99(3/4): 196-206.