172
S. Kosai and E. Yamasue
Fig. 11.6 Projection of material productivty
the significant gap of growth rate can be observed. Material productivity on the
DMI basis is projected to constantly increase by 578% in 2030 compared to 1990.
Meanwhile, that on the TMR basis is forecasted to reach in the range between 158
and 196%, and there is a possibility that the material productivity on the TMR basis
remains the same between 2020 and 2030. The material productivity in Japan has
been monitored only on the DMI basis so far, which potentially risks reaching a shortsighted conclusion of relationship between economic development and material input
in the policy making process.
Finally, the overall specific TMR in Japan in 1990–2013 and its projection in 2020
and 2030 is presented in Fig. 11.7.
The overall specific TMR has continuously increased by 57% from 4.0 MtonTMR/Mton in 1990 to 6.3 Mton-TMR/Mton in 2013. Then, it is forecasted to
Fig. 11.7 Projection of overall specific TMR
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