User:Seniorexpat/Resource stock

The glossary [|Glossary_of_environmental_science] defines resource stock as the total amount of the resource often related to resource flow which describes the amount of resources harvested (or used) per unit time. To harvest a resource stock sustainably, the harvest must not exceed the net production of the stock. Stocks are measured in mass, volume or energy and flows in mass, volume or energy per unit of time. Resource stocks and flows are calculated in the branch of science called Material Flow Analysis (MFA).