Wow. So many variables. 1 year to "survive" is quite a while. A well-equipped person could survive a year or longer if well-equipped meant ample shelter and a reasonable food and water supply for the period. Other than that, I would say no, probably not. I just don't think a normally-equipped PSK is going to be enough to survive a winter in northern Canada.

Now, if the question is, how LONG could a person survive in the wilderness in northern Canada . . . If their PSK included sufficient shelter or a method of making/obtaining shelter and food and/or a way of obtaining food and water then who knows. A week? A month? Perhaps longer. Shelter, water and food are, of course, the three essentials for a stay of much length. And the more training you have the less "stuff" you probably need in your PSK, but the three essentials of sufficient amount/quantity/quality will definitely make a difference.

Our public television station ran a program called "Alone in the Wilderness" a while back which featured a man who spent more than a year in the wilderness of Canada or Alaska or someplace like that. He spent the summer building a cabin (he was a terrific craftsman with the hand tools he had) and then just hung out in the winter. I believe some supplies were flown in. He chipped ice each day in the nearby lake keeping a hole large enough for his water bucket to pass through. The fire in his fireplace kept him warm even at 50 below. Very interesting documentary. He WAS well-equipped!