You cannot change location of Resource Fields. You can only Demolish them.
Follow the directions below to Demolish your Resource Fields.
■ How to Demolish Resource Fields
- [Start Game] > [Tap Resource Fields] > [Details] > [Demolish]
※ When you Demolish a Resource Field, you won't get back any of the resources
you spent on constructing and upgrading the Resource Field. Please be careful.