Material flow indicators


Material flow indicators are markers used to quantify the environmental pressures associated with the modes of production and consumption of goods and services within a country. The study of these indicators is an important tool for the management of resources and waste, the monitoring of sustainable development and knowledge of the physical metabolism of the economy.

Titre de la référence


The objective is to make an inventory of the following physical flows:

  • Internal extraction, used and unused;
  • Imports;
  • Indirect flows linked to imports;
  • Exports;
  • Emissions into the environment;
  • Material stocks.


As part of this study, ICEDD participated in:

  • Collecting the data necessary for producing material flow indicators for the Walloon Region;
  • Proposing an estimation methodology for the missing data (estimation of some missing flows, methodology for quantifying imports and exports, etc.);
  • Calculating the indicators.

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