Sustainable Development Models
In concentric circles model of sustainable development, three constituent parts of economy, society and environment could be represented as concentric circles (Ott, 2003). If society and environment development are considered then it is only bearable development. It is equitable if together social and economic development is taken care of. However, it is viable if environment is considered along with economic development. Sustainable development is achieved if all three developments are in balance, emphasizing sustainable development: at the union of three constituent parts (Adams 2006 and IUCN 2006).
The economic development, social development, and environmental protection are interdependent and mutually reinforcing pillars of sustainable development. Strong foundation is required to balance three pillars for stability of sustainable development. Ethics and strong commitments should be treated as the foundation to the pillars of the sustainable development (Singh 2011).