Economy-wide Material Flow Analysis and Indicators
The economy-wide material flow analysis portrays the material basis of a country or region. It measures the exchange with the natural environment and - via trade - with other economic regions.
This so-called "socio-industrial metabolism" is described by indicators for input, output, consumption, balance and productivity.
The most comprehensive input indicator is the Total Material Requirement. TMR measures the domestic and foreign resource extraction which is associated with the production and consumption activities of a country. TMR accounts for the total primary material requirements, it contains both raw materials which as such are further processed and extractions for economic purposes which are per se not further used (e.g. mining waste and excavation for infrastructures).
The indicator "Raw material productivity (GDP/Raw material consumption) of the German Sustainability Strategy so far measures only abiotic used extraction and directly imported raw materials (see progress report of the Integrated environmental and economic accounts"). Thus, the continuous shift of resource extraction to foreign countries via the import of semi-manufactures and final products is recorded - misleadingly - as progress. The real primary resource requirements are not accounted for.
In the sustainability strategy the German government has set the target to double the raw materials productivity by 2020 (base year 1994). In the German Resource Efficiency Programme the intention was formulated to consider also indirect resource flows via imports as well as used and unused extraction of primary materials. The Wuppertal Institute develops proposals towards this end in the project PolRess.