The Turcot interchange will be green in a hundred years

The Turcot changer will be green in a hundred years

and Geneviève Lajoie MISE & Agrave; DAY

& nbsp; The Turcot project is still far from being carbon neutral. The tiny trees planted along the highway will take 100 years to offset the 35,000 tonnes of CO 2 emitted by the Quebec Ministry of Transport during the reconstruction of the interchange.

The Minister of Transport, François Bonnardel, surprised everyone last week by affirming that the third link between Quebec and Lévis would be carbon neutral. & nbsp;

He promised to plant trees and purchase carbon credits to offset greenhouse gas (GHG) emissions produced during construction, citing the Turcot interchange project in Montreal as a model. & Nbsp;

However, it will take a century before 51,000 hardwoods and conifers absorb the equivalent of the carbon emitted during the work of this $ 4 billion project, Le Journal noted.

So far, only a third of the promised trees were planted last spring. & nbsp;

Small shoots

But with a light snow cover, you need good eyes to see the deciduous shoots and small spruce trees about twenty centimeters tall blending into the tall grass near Highway 20, at La Presentation.

A small leafy tree from the “Turcot forest” in Sainte-Madeleine.

“The big limitation of this approach is that construction emissions are emitted and trees will sequester that carbon over 100 years. This is not consistent with the dynamics of climate change ”, deplores the professor in the natural sciences department of the University of Quebec in Outaouais, Jérôme Dupras.

The Turcot changer will be green in a hundred years

Jérôme Dupras, professor in the science department Natural Resources at the University of Quebec in Outaouais

Ironically, the expected life of the new interchange is 75 years.

“We are able to achieve fairly good compensation results with the planting of trees, but there are many uncertainties linked to the effect of weather, such as tree mortality,” recalls Mr. Dupras. & nbsp;

The professor believes that “to have real carbon neutrality” Quebec should rather have planted a number of trees that capture the quantity of GHGs emitted by the Turcot yard annually, that is to say about “a million trees ”. & nbsp;

“Like that, each year, the trees will sequester 7,000 tonnes of carbon. Then, when the construction is finished, these trees will continue to grow and it will be a benefit that will perhaps compensate for the effect of the cars on the road, ”he says.

A first

The tree planting project as a GHG offset is a first for the Department and stems from a university research project entitled Carbon sequestration strategy in the road context.

This summer, the Quebec government tabled a draft regulation to regulate the issuance of carbon credits by planting trees, which uses this method of calculation called “real carbon”.

The ministry says it has partnered with university researchers for its carbon sequestration project, which was a first.

The trees of the “Turcot forest” are emerging from the ground & nbsp; & nbsp;

Quebec will plant 51,000 trees to offset the pollution caused by the construction of the interchange

The 51,000 trees in the “Turcot forest”, which will be used to make the reconstruction of the interchange a “carbon neutral” project, have started to be planted.

The light snow cover at the end of November was enough to hide most of the hundreds of poplars, oaks, birches and maples, buried last spring by the Quebec Ministry of Transport (MTQ) to The Presentation.

Spruce trees, each about twenty centimeters high, are more visible, although hidden by the cattails of the surrounding stream and blending into the tall grass. & Nbsp;

Eight kilometers to the south, facing Mont Saint -Hilaire, thousands of stakes protected by a net line Highway 20. & nbsp;

If the stakes are clearly visible, the trees a few millimeters wide are hard to see. A few rare stems reach a meter high, but the majority do not exceed 30 centimeters.

These young plants capture carbon, but it will take a century before they offset part of the greenhouse gas emissions from the Turcot interchange project ( see text on page 3 ).

Up to Mauricie

To date, 17,376 trees have been planted on five sites in the Montérégie region, along provincial roads . It cost the MTQ $ 880,000.

Work to plant the remaining 34,000 trees is to begin “in 2022,” the ministry said. For now, eight sites in Center-du-Québec have already been identified for 16,000 of them. & Nbsp;

16,000 TREES AT 8 SITES IN CENTER-DU-QUÉBEC & nbsp; & nbsp;

  • Sainte-Geneviève-de-Batiscan, highway 40, exit 229 & nbsp; & nbsp; & nbsp; & nbsp;
  • Trois-Rivières, highway 40, exit 192 & nbsp; & nbsp; & nbsp; & nbsp;
  • Saint-Eugène, highway 20, exit 160 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;
  • Saint-Cyrille-de-Wendover, highway 20, exit 185 & nbsp; & nbsp; & nbsp; & nbsp;
  • Bécancour, highway 30, near rue des Glaïeuls & nbsp; & nbsp; & nbsp;
  • Saint-Wenceslas, highway 55, exit 153 & nbsp; & nbsp;
  • Bécancour (Saint-Grégoire), highway 55, exit 176 & nbsp; & nbsp; ; & nbsp;
  • Bécancour (Gentilly), route 132, km 227 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp;

17,376 TREES DIFFERENT SPECIES ALREADY PLANTED & nbsp; & nbsp;

1006
Balsam poplars

4101
White spruce & nbsp;

1697
White birch & nbsp;

2689
Large-fruited oaks

2689
Sugar maples & nbsp;

674
Cottonwood trees & nbsp;

1347
Poplars of Canada & nbsp;

146
Western cedars & nbsp;

146
Black cherry trees & nbsp;

136
Ostryers of Virginia and charms of Carolina & nbsp;

1168
Red oaks & nbsp;

1168
Red maples & nbsp;

203
Douglas firs, scarlet oaks, black oaks or American locusts & nbsp;

206
Rigid pines, white pines, eastern hemlock

SAINTE-MADELEINE
Highway 20, exit 120
932 TREES

& nbsp;

RIGAUD
Highway 40, exit 2
5519 TREES

& nbsp;

THE PRESENTATION
Highway 20, exit 123
1448 TREES

& nbsp;

MONT-SAINT-HILAIRE
Autoroute 20, exit 115
8701 ARBRES

& nbsp;

SAINT-BERNARD-DE-LACOLLE
Route 202, rang Bogton
776 TREES

See also

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