Geoscience Reference
In-Depth Information
6
A
1
I
5
E
B
A
IV
C
D
3
III
II
4.2
2
The general physical model of the socio-economic system and its relationships
with Natural Capital (NC).
A
FIGURE 2.4
the infrastructure of the economic subsystem
dependent on the renewable resources provided by the components of the NC; II
=
the human-made physical capital: I
=
the
industrial infrastructure of the economic subsystem dependent on “non-renewable”
resources; III
=
systems for commercial energy production using fossil and nuclear fuels
and hydro-power potential as primary resources; and IV
=
the human settlements infra-
structure. 4.1, 4.2, and 4.3 identify the energy flow pathways; B
=
=
social capital; C
=
cultural
capital; D
=
human-dominated components of the NC; E
=
natural and semi-natural
components of the NC: 1
=
flow of renewable resources; 2
=
flow of raw materials; 3
=
flow of fossil and nuclear fuels; 4
material and energy inputs
(fertilization, agrotechnical works, irrigation, selection, etc.) to support the management of
human-dominated systems; 6
=
flow of electrical energy; 5
=
dispersion of heat and of secondary products (wastes) in the
troposphere and in the HGMU components. (After Vadineanu, A.,
=
Sustainable Development:
Theory and Practice,
Bucharest University Press, Bucharest, 1998. With permission.)
and carrying capacities of the local, regional, and global NC. In addition,
ethical and moral criteria for sharing of resources and services within and
among generations and among jurisdictions must be considered.
3. There is a need to establish thresholds for the constituent units of the NC
and for the spatial relationship between NC and SES. Specifically, self-
maintained and self-regulated ecological systems should represent more
than 50% of the total NC of a country or region. So, the structure and
metabolism of a particular SES should have a high degree of complemen-
tarity with the structure, productivity, and carrying capacity of the domestic
NC.
4. Although we refer to the NC as the EF for a particular SES, wetlands,
and in particular lagoons, are a major component in the EF of any SES
 
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