All sectors in the travel industry must be conscious of environmental value and the threats it's facing from ever growing tourism. Preserving and reviving the environment and reducing the carbon footprint should be conducted simultaneously with the right knowledge and understanding and appropriate approaches.
Buddhism beliefs in the power of mind. Once you set the mind on something, it can be achieve. Same goes for being a green heart, if you are conscious about the environment, you will always find ways to reduce the impact and try every possible was without being told or force to do so.