The urban space affected by the topography of the various cities show different characteristics of the shape.Urban space shape of the impact of carbon emissions from commuting,construction layout,the shape of the urban space has a different carbon emission intensity.First,based on the method of Boyce-Clark shape index of the built-up area of 35 Chinese cities(municipalities,provincial capitals and sub-provincial cities) in 2000 and 2009 estimates;carbon calculation model built in 35 cities of China District carbon emissions has been calculate...