In its work on ecosystem management, which is of particular significance to the Sustainable Development Goals on conserving and sustainably managing terrestrial and ocean ecosystems, UNEP focuses on the following areas: The Enabling Environment – Assisting countries in incorporating the value and the long-term function of ecosystems in planning and accounting frameworks. The productivity of terrestrial and aquatic ecosystems – Assisting countries to use an ecosystem approach to managing terrestrial and aquatic ecosystems. The productivity of marine ecosystems – Assisting countries to use an ecosystem approach in marine ecosystem management.