Sustainability is a multivariable issue involving physical, chemical, biological, socio-economic as well as political dimensions with humans as the major driving force. Sustainable development requires wide participation from and consultation with various stakeholders. The use of spatial information and appropriate decision support tools has become essential in raising awareness, providing scenarios, reaching consensus and making decisions on a wide range of sustainability issues. Similarly, such information and tools are also indispensable for evaluating the progress, assessing the trends and monitoring the impact of responses to environmental pressures by human beings.
This strategy features in the framework of Agenda 21 as formulated at UNCED (Rio de Janeiro, 1992), now coordinated by the United Nations Commission on Sustainable Development and implemented through national and local authorities.