Studying the carbon footprint of highway service area is helpful to understand the carbon emission level and structure

and can provide basic support for the subsequent upgrading and reconstruction of service areas and the creation of "green service areas". First

systematically sorted out the carbon footprint calculation methods and specific steps. Secondly

the three levels of carbon footprint calculation are introduced

The first level（direct emissions） and the second level（indirect emissions） are set as the carbon emission boundary of the service area

and the carbon footprint calculati

on method during the operation period is proposed

and Jiangxi province take an expressway service area as an example

calculate its 2020 first-level and second-level carbon emissions

the results show that the annual carbon emission of highway service area is189.3 t（in terms of the mass of CO

2

）

in which the first level and the second level account for 33.2% and 66.8% of the total carbon emission

respectively. The carbon emission of service area mainly comes from the electric energy（the second level）

and reducing the power consumption is the key to reduce carbon emissions. Finally

by analyzing the carbon emission of each link in the expressway service area

the corresponding emission reduction measures are discussed

carbon emissions in service areas can be reduced by using clean energy

planting high-carbon sequestration plants

making full use of sunlight in buildings

and designing ventilation and convection.