The pilot reported he was attempting to takeoff in his ski equipped airplane in a gusting crosswind estimated at 25 knots. He said he elected to use the runway subjected to the greatest crosswind because it also had the most amount of snow on it. Soon after becoming airborne, the airplane encountered severe turbulence, and the pilot elected to abort the takeoff. The airplane was not in a position to land on the runway or clear nearby obstructions when the pilot aborted the takeoff. The airplane subsequently collided with trees adjacent to the runway.