Club committees should promote a fair-play culture, embracing diversity, transparency, integrity and respect. Create a Code of Conduct that shows how you expect members to behave towards each other and what to do if there is a dispute. Dispute management is also a topic that should be covered by your Constitution.
The Bushwalkers Code encourages an atmosphere of respect, with guidelines on how to achieve this.
The Play by the Rules website has online training, and loads of tools to assist with developing a great club culture and making it inclusive.
Bushwalking NSW has some guidelines on dealing with discrimination and harassment.