This is the first study to succeed in demonstrating that in a natural forest, tree species diversity benefits from sequestering carbon in the soil.Scott Chang, a professor specializing in forest soils, says one of the study’s authors.
The research team reviewed data from Canada’s National Forest Inventory to select natural forests to study. Later, he took samples of their soil for analysis.
According to the researchers’ observations, in fully diversified forests, the sequestration of greenhouse gases and gases that promote tree growth increases by 30% to 32% for carbon and 42 to 50% for nitrogen.
More diverse forests absorb more carbon dioxide and nitrogen from the atmosphereJinli Chen, a postdoctoral fellow at the University of Alberta and one of the study’s authors, summarizes.
The study was published in the journal Science Nature (new window) This diversity helps reduce global warming in Canada.
In managed forests, biodiversity is declining
There are fewer and fewer completely different forests in the world, especially in Canada.
Earl of Devon, A security expert from the association Alberta WildernessHe says Alberta’s forests are not diversified.
Forest management reduces tree diversity in forests.
Logging companies only plant trees they want to cut later, he says. In addition, some companies use the powerful herbicide glyphosate to inhibit the growth of other tree species.
They don’t want the trees they plant to compete with other species, especially for soil nutrientssays the Earl of Devon.
Canadian forests already have fewer tree species compared to temperate and tropical forests Scott Chang explains that he believes forest diversification should be part of policies aimed at combating global warming.
According to the Federal Tree Planting Program website, (new window)
More than 150 species of trees have been cultivated
In more than 500 locations Since the announcement of the scheme.
However, the Canadian government is on track to miss its goal of planting 2 billion trees by 2031.
With information from Christy Klimenhaga