With the improvement of people ’s living standards,the environmental and resource problems caused by various activities related to people ’s lives have also increased.As one of the industries that have developed rapidly in recent years,the environmental problems caused by its carbon emissions have been paid more and more attention by relevant scholars and become one of the hot issues of research.Firstly,on the basis of summarizing and combing a large number of literatures,this paper constructs a tourism life cycle measurement model based on life cycle theory(LCA),and divides it into five processes : tourism transportation,tourism accommodation,tourism catering,tourism activities and tourism waste disposal.Through the calculation of the carbon footprint of each process of tourists and scenic spots in the case,the carbon footprint and the overall proportion of each process of the whole tourism life cycle of tourists and scenic spots are obtained.The results have great significance for the formulation of energy saving and carbon reduction scheme in the later stage,which can effectively improve the efficiency of the scheme.Secondly,based on the carbon emission flow graph theory,this paper constructs the carbon emission flow graph of each process in the tourism life cycle,and further refines the carbon emission factors of each process according to the flow graph theory to reduce the uncertainty of the calculation process and improve the calculation accuracy.At the same time,the research has obvious advantages in carbon emission traceability,carbon emission data visualization,data optimization,and data scalability improvement.It can realize the basic type discrimination of data and update the existing carbon emission data.This paper takes a tourist and a scenic spot as the research object,and calculates the carbon emissions of each stage in the tourism life cycle of tourists and scenic spots according to the proposed carbon emission flow chart theory.The results show that in the whole life cycle of tourists ’ personal tourism,the carbon footprint of tourism transportation process is 218.03 kg CO2 e,the carbon footprint of tourism accommodation process is 71.77 kg CO2 e,the carbon footprint of tourism catering process is 16.58 kg CO2 e,the carbon footprint of tourism activity process is 1.67 kg CO2 e,and the carbon footprint of tourism waste treatment process is 16.49 kg CO2 e.At the same time,combined with relevant data,the annual carbon emissions of the scenic spot in 2019 were estimated.The accounting results of the above five processes were : 274397.96 t CO2 e,152621.32 t CO2 e,140033.68 t CO2 e,57933.51 t CO2 e,68790.64 t CO2 e,respectively.According to the case accounting results,the corresponding energy-saving and carbon-reducing schemes were proposed from the three levels of tourists,scenic spot managers and government.Finally,in order to enhance the operability and feasibility of carbon emissions flow graph theory,this paper also developed a low-carbon tourism management system,which is convenient for users to use carbon emissions flow graph theory to calculate and manage the carbon footprint of tourists and scenic spots.Through this digital media,we can strengthen the cultivation and guidance of low-carbon tourism awareness of tourists in scenic spots,and also strengthen the sense of participation of tourists in the low-carbon construction of scenic spots.After testing,the system has perfect functions,safe and stable data transmission,good reliability and compatibility,and has certain economic and practical value. |