A comprehensive background investigation was carried out on green spaces of the built-up area in Xuzhou.The biomass of all tree species in different city partitions was determined.And the carbon stocks of different areas,each type of green spaces and arbors species were analyzed.The results showed that,in all the seven districts,Yunlong District and Gulou District exhibited the highest biomass in per square meters followed by Quanshan District and Jiawang District.According to the survey technical regulations,the urban green spaces in Xuzhou could be divided into three types:park green space,road green space and other subsidiary green space.The biomass in per square meters in road green space was higher than which of the other two.There were three tree species (Ginkgo biloba,Ligustrum lucidum Air,Platanus hispanica) distributed more widely in the construction of the urban green space.And the Platanus hispanica had the most widely distribution and the largest average DBH.The richness index of the arbors was different in different types of the green spaces.Road green space had fewer species.Other subsidiary green space and park green space nearly had the same species.
urban green spacecarbon stocks of the arbors layerdiameter classrichness