Alaska Borel Forest is releasing more serious and continuous fire carbon and nitrogen in the atmosphere from the trees and soil burned, a trend that accelerate climate warming. But the new research published this week in Journal Science shows that the deciduous trees change the spousing forests for that loss, and collect four times faster at 100 years of fire intervals.
Studying under the leadership of a team of researchers at the center of ecological mechanism science and society at the University of Northern Arizona shows that these rapidly growing, less flammable deciduous forest fire patterns and a stable against the loss of nutrients’ Firebrake can work as’ area.
The study began due to the dramatic 2004 fire season in Alaska when an area was burnt seven times long. Historically, more than half of this wild terrain has been dominated by a black spouse, but after the fire, the rapidly growing aspen and the bite are changing some of these stands.
75 Black Spots made from the researchers of the team, Northern Arizona University, Alaska University, Aubner University, and Saskachwan University burned in 2004 and followed their recovery in the next 13 years.
He also collected a series of data from the clay and soil and soil of various ages and burned severity to make a cronusquence, a kind of scientific time-defaults which allow researchers to move rapidly through 100 years fire cycle. So that to see how to retrieve the forest and how to change.
Michel Mac, chief writer of biology and study at the University of Northern Arizona, said, “In 2005, I thought there was no way to recover carbon who lose these forests in this fire.” “The literature is full of papers, more serious fire can be replaced before the next fire. But not only did we see these deciduous trees for those losses, they did so fast.”
The team found that the new aspen and the bear tree where Black Sprus burned carbon and nitrogen collected compared to the ground, contrary to soil organic layer, stored it in its wood and leaves.
And at the end of an estimated 100 year cycle, more nitrogen was recovered in the form of fire in the deciduous stand, and more carbon was lost, resulting in net ecological mechanisms increased in carbon balance. Calculation of this balance is important because the scientists work to understand ways to change such northern forests, and the effect of those changes on global carbon images.
Forest Ecology and a Assistant Professor Hertar Alexander in Auburn said, “I was surprised that the deciduous trees can fill the lost carbon so effectively and efficiently.”
“Even though a lot of carbon is combustion and emitted in that environment when the black spouse burns severely, deciduous trees which often replace them, to retrieve and store carbon in their above leaves and wood There is a wonderful ability. ”
“In one area with only five common tree species, this study shows how the change in the structure of the tree can dramatically change the pattern of carbon storage in Borel forests,” said the Northern researcher of Alaska-Fairbanks University Jill Johnstone and Study.
McKek said, “Carbon is just a piece of puzzle, who said that there are other important responses on the climate in the deciduous forests, or the endway effects.”
We know that these forest help in calm regional climate, and we know That they are less ignited, so the possibility of spreading fire is less. Together Together, these effects make a relatively strong set of stabilizing climate reactions in the borel forest. ”
But there is a lot that researchers do not know about the fate of deciduous Borel forests in a hot world.
“Mature deciduous trees die, will they be replaced with trees with the same structure, structure, and carbon storage capabilities?” Alexander asked. “And will they be cured with fire with the same carbon storage capabilities?”
“Changes in rapidly growing deciduously increasing rapidly increasing rapidly in the forest of Borel can balance the effects of acute fire rule in Borel’s forest,” said Islike Myers-Smith, a global change at the University of Edinburgh which was not included in it. Study. “But it is seen that how carbon balances the balance in future with sharp warming on high latitudes.”
Mac said that continuous climate warming can undo carbon-creeting benefits, which represent these trees. “Carbon should reside long on the scenario because the deciduous forests are less flammable.
But the flammability is not stable. The climate will pass a threshold where things will be so hot and dry, even the deciduous forest will burn. Ask How strong will the weak effect of low flammability, and how long will it run? ”
PermaFrost carbon also makes the picture complex.