Stewardship (noun)

1. The responsible management and protection of something, especially natural resources or the environment.
2. The role of a steward, especially in relation to managing land or property.

Origin:

Middle english: from old english stīweard "guardian", from stīg "hall, palace" + weard "guardian". the original sense was "the office or duty of a steward", later "the management of land or property by a steward", also "care and management of something as a responsible guardian".

Examples:

1. The company has a strong commitment to environmental stewardship.
2. He took on the stewardship of the family business.
3. The stewardship of the national park is the responsibility of the government.
4. He believed that stewardship of the land was a sacred duty.
5. The organization's mission is to promote good stewardship of the oceans.