Environmental Engineering Reference
In-Depth Information
Fig. 2.12
Water available for human use. (Source: UNEP and Japan Water Guard)
http://npo-jwg.
Table 2.6
Three principles of Herman E. Daly
Use rate of renewable resources should not exceed the rate of renewal
Use rate of non-renewable resources should not exceed the speed of conversion to renewable
resources
The emission rate of pollutants may not exceed the speed or absorption or degradation in the
environment
Table 2.7
Four principles for sustainable development
Concentrations of matter extracted from the Earth should not increase
Chemicals produced by Society should not increase in nature
Nature should not be weakened by physical processes
Society must not create obstacles which deny people the opportunity to meet their needs
2.2.7
Guidelines to Achieving Sustainability
Looking for guidelines to maintain sustainability, three principles were proposed
by Herman Daly in 1972, and four Natural Step rules were also proposed by Karl
Heinrike Robert in 1989. These are summarized in Tables
2.6
and
2.7
respectively.
I translate these in a more personal way as in Table
2.8
, and link them to the
fundamental human motives, actions and consequences in Fig.
2.13
.
This is what I believe to be necessary to resolve current global environmental
problems. To do this, we need the power of young people like the “Environmental
Leaders” we are attempting to train in the Environmental Leader program.
