Yes, the palm trees are artificial: http://www.zonglvshu.com/case_view.aspx?TypeId=130&Id=635&FId=t4:130:4
The trees inside Kung Fu Panda Land of Awesomeness are artificial as well: http://www.zonglvshu.com/case_view.aspx?TypeId=130&Id=636&FId=t4:130:4