The policy of sustainable development points out that sustainability must integrate
ecological integrity, economic efficiency, and social equity [44]. This concept is
already accepted by majority of countries since the debate of theWorld Conservation
Strategy in 1980, the report (Our Common Future), of the World Commission on
Environment and Development in 1987 and Agenda 21 in 1992. A strategy for
sustainable development was agreed upon in Göteborg in June 2001 (see the appendix):
EU sustainable development strategy is based on the principle that economic
growth, environmental protection and social inclusion should go hand in
hand. Brundtland Commission defined the goal of the state sustainability within
the ecosphere: to meet the needs of the present without compromising the ability of
future generations to meet their own needs. [45] The system in which the sustainability
is planned to be achieved comprises societies and the surrounding ecosystems.
Ecosystem includes whole ecosphere, which occupies the full space above the
lithosphere (Earths crust) to the outer limits of the atmosphere. Principles of
sustainable development must be based on real assumptions and physical (conservation
laws) and biological laws; the biogeochemical cycles; the ecological interdependences
of species; the anthropogenic influence on the ecosphere [46]. The main
postulates (so-called system conditions) of sustainability are as follows: