Abstract
The authors aim to investigate the number of trees necessary to capture the CO2 emissions from house–campus travelling, to and from the Maiêutica Academic Campus in the north of Portugal. A sample of the academic community was given an online survey in order to assess mobility practices. Based on the data collected, CO2 emissions, as well as the number of trees necessary to mitigate these emissions, were calculated. The authors estimate that the total emissions resulting from house–campus commutes amount to 2937 tCO2 year−1. To mitigate this amount of carbon dioxide, 138 ha would be necessary to plant 96,539 trees, according to the species’ respective CO2 removal rates. The estimated tree area necessary to neutralize the community’s mobility related CO2 emissions is so high that other alternatives must be considered: a preferred use of public transportation, carpool system, online theoretical classes, rescheduling timetables, green roofs installation, and photovoltaic panels.
Highlights
IntroductionIn. Portugal, the transport sector still has one of the highest energy consumption rates (37.2%)
To achieve the objectives set by the Paris Agreement, and keep the global average temperature increase well below 2 ◦ C, the European Union (EU)
There was an open question regarding the use of other means of transportation
Summary
In. Portugal, the transport sector still has one of the highest energy consumption rates (37.2%). Of the total primary energy among other activity sectors [2]. This sector makes one of the most significant contributions to the increase of greenhouse gases, GHG (CO2 , CH4 , N2 O, HFCs, PFCs, SF6 , and NF3 ). According to the European Environment Agency [3], transport accounts for 27% of the total CO2 European emissions to the atmosphere. GHGs, due to anthropogenic emissions, are responsible for climate changes, in particular the temperature increase in the last 30 years [4]. To achieve the objectives set by the Paris Agreement, and keep the global average temperature increase well below 2 ◦ C, the European Union (EU)
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