It's a matter of association IMO.
For some reason, your dog has attached a negative experience w/going in the basement.
There are a couple of options
1) Disregard the basement and feed your dog upstairs
2) Try to overcome the negative association by making going into the basement a positive experience
By #2 I mean, lead your dog down and give him treats and lots of praise until he enjoys going down there again.
Personally, I think dogs should be more "part of the family" and fed near where you eat, not separated from the family.
JMHO