Beyond Agenda 21, five other agreements had resulted of this process: the Declaration of the River, the Declaration of Principles on the Use of the Forests, the Accord on the Biological Diversity and the Convention on Climatic Changes. Agenda 21 translates action the concept of sustainable development, modifying the standards of development of the next century. Agenda 21 is, still, a process of participativo planning that analyzes the current situation of a country, state or city, and plans the future of sustainable form, through in planning concerning all the social actors and of the formation of partnerships and commitments for the solution of the problems, from analysis of economic, social, ambient and politician-institucional aspects. The Agenda considers, on questions to the income and job generation, to the reduction of the regional and interpersonal disparidades of income, to the changes in the standards of production and consumption, to the construction of sustainable cities and the adoption of new models and instruments of management. The objective of Agenda 21 is to subsidize action of the Public Power and the society in favor of the sustainable development, being necessary, for in such a way, the legal creation of instruments and international mechanisms. If the involved countries not to offer have supported to the implementation of Agenda 21, through the elaboration of national laws that they aim at to the sustainable development, the work will be forgotten.
In the international sphere, it has the necessity of legal instrumentation for the implementation of indispensable measures to an ambient management in the world-wide scope. Not only the countries SNUC, establishes criteria and norms for the creation, implantation and management of the units of conservation. The article 02 of the mentioned law establishes important concepts concerning the sustainable development, wants is: units of conservation, conservation of the nature, preservation, integral protection, sustainable use, recovery, restoration, zoning etc.