The Theoretical Connotation of Sustainable Development: The 20~(th) Anniversary of UN Conference on Environment and Development in Rio de Janeiro,Brazil

2012 is the twentieth anniversary of United Nations Conference on Environment and Development in Rio de Janeiro,Brazil.Reviewing the progress of the last twenty years,the paper summarizes the achievements and shortcomings of sustainable development strategies and puts forward clear route map for the future world healthy development.The people's connotation recognition to sustainable development theory transfers from survival to development,from development to sustainable development.Development is a behavior trace in a complex system of nature-society-economy,and this vector will promote the complex system evolving in a more reasonable and harmonious direction.The sustainable development emphasizes the connotation of "integrity","endogenous" and "comprehensive". The external response of sustainable development strategy is to deal with the relations of man and nature,and is how to firm support to sustainable capability.The internal response of sustainable development strategy is the soft support of sustainable development capability.When the human's demand to nature is balanced with the human's return to nature,human's efforts to this generation is balanced with human's efforts to the next generations,and human's consideration are both on the development of this region and on the development of the other regions or on the global development,the basic connotation of sustainable development will be more enriched.Sustainable development reveals the systematic essence of "development,coordination and sustainability". Development focuses on dynamic characteristics of productivity improvement and social achievement.Coordination focuses on internal efficiency and quality connotation.Sustainability judges the long-time reasonability of development progress.Three characteristics embodied in the theoretical system of sustainable development are quantity dimension,quality dimension and time-space dimension,which are the completion of pursuing development.Sustainable development reflects the organic unity of "power,quality and equity". The power of development is the ability of development,the potential of development,the speed of development and its sustainability of a nation or a region.The quality of development is the degree of closeness between the standard of rationality and the harmonious degree of man and nature,the resource saving and friendly environment.The equity of development is the income distribution system,common wealth degree,human development index(HDI),and the degree to overcome the differences between the rich and the poor,between the urban and the rural area.Sustainable development establishes the human environment of "harmony,stability and safety" and reflects the green operation of "speed,quantity and quality.In less than ten years in the future,in order to realize the target of being a well-off of society and having developed economy,sound democratic system,advanced science and education,flourished culture,better ecology,advanced society,healthy spirit,and good living quality,Chinese governments should develop from comprehensive,coordinated and sustainable perspectives,take the human as the emphasis,promote the self-perfection of human,and take the civilized developing road of developed production,abundant living,and good ecology.The following seven themes of sustainable development are keeping the rational growth of economy,improving the quality of economic growth,satisfying the basic requirements of the man-orientated,adjusting quantity growth of population,improving the quality of population,maintaining,extending and protecting the natural resource foundation of nature,solving the bottleneck of developing by science and technology,and balance the environment and development.