The youngsters from Bonnybroom nursery in Sighthill met up with city councillor Liz Cameron who is spearheading the campaign.
The three and four-year-olds have agreed to protect the environment through a range of actions including only using one paper towel to dry their hands, picking up litter, keeping their playground tidy and always turning off the water when they wash their hands.
They also pledged to use both sides of the paper when drawing and to look after the flowers in the nursery's garden.
In 1765, inventor James Watt imagined a new kind of steam engine while walking on Glasgow Green. His idea kickstarted the industrial revolution.
To mark 250th anniversary of the steam engine's conception the city wants to be at the forefront of a green revolution and is striving to become one of Europe's most sustainable cities.
A year of events in planned for 2015 aimed at motivating local people, businesses and visitors to become more eco-friendly.
The celebrations will highlight the city's natural assets including is parks and rivers and will promote action being taken to cut carbon emissions such as the installation of electric car charging points.
Organisers want as many people to get involved in the celebrations as possible and to get in touch with them on twitter@greenglasgow to suggest how they could contribute either by holding their own event or by supporting an organised event.
Mrs Cameron said: "It's a pleasure to see the children's efforts to protect the environment and I'm delighted they have made green pledges in support of Glasgow's plans to hold a Green Year in 2015.
"Pupils at Bonnybroom Nursery are perfect examples of how everyone can do their bit to help make Glasgow more sustainable .
"I'd urge everyone to keep up-to-date with the latest developments by following @greenglasgow on twitter and to get involved in plans for Green Year 2015."