To achieve this, indicators that focus on environment-related “productivity,” or its inverse, “intensity,” should be used. Such indicators include those that monitor the productivity of natural resources and materials used in agricultural production (Box 3.1). Monitoring natural resource and environmental productivity for agriculture is important because of the sector’s significant role in using natural resources, making the productivity of soil and water resources of utmost importance. It should ideally encompass all natural resources and ecosystem inputs that are used as factors of production in the economy.