A: Yes it can
A: If outdoor rink you mean the surround that retains the water, and lays on the ground, I would suggest pressure treated lumber, would survive longer outdoors, against the earth.
A: This lumber is kiln dried thus should remain stable but lumber does acclimatize itself to its environment. Best thing to do is to leave the wood in the room where it will be used for a couple of weeks beforehand. Once the frame is built, it's recommended to seal the lumber with some sort of sealer to avoid the possibility of moisture penetration.
A: Please call your local home depot to get the peices prepared.