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material flow analysis
Material flow analysis (MFA) (also referred to as substance flow analysis (SFA)) is an analytical method to quantify flows and stocks of materials or substances in a well-defined system. MFA is an important tool to study the bio-physical aspects of human activities on different spatial and temporal scales. It is considered a core method of industrial ecology and urban metabolism. Typical applications of MFA include the study of material, substance, or product flows across different industrial sectors or within ecosystems. MFA can also be applied to a single industrial installation, for example, for tracking nutrient flows through a waste water treatment plant. Examples for policy-relevant applications of MFA include the determination of material use indicators for different societies and the assessment of strategies for improving the material flow systems in form of material flow management. Since 1990, the number of publications using material flow analysis as main method of investigation has grown steadily. Major journals that publish MFA-related work include the Journal of Industrial Ecology, Ecological Economics, Environmental Science and Technology, and Resources, Conservation, and Recycling.〔http://www.journals.elsevier.com/resources-conservation-and-recycling/〕
==Description of the method==
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