Hi, and welcome to OpenStreetMap! Since you requested a review, I looked over your changes here. Looks great to me! I understand natural=scrub to generally mean "Shrubby plants, maybe some wild grasses, and trees whose growth is stunted." Something like this: http://fc07.deviantart.net/fs71/i/2010/243/1/b/scrubland_stock_2_by_humblebeez-d2xp3an.jpg

However, the definitions aren't really strict and it can depend on the context, unfortunately. If not scrub here, perhaps natural=wood would be the next best thing.

Let me know what you think. Thanks for your contributions!