According to the Global Network footprint (Global Footprint Network) 6 October was the Ecological Debt day - the day when mankind has exhausted all resources that could produce the planet in 2007 .... The consumption for the remainder of the year was taken from the theoretical reserves of future generations.

Cutting trees faster than growing up, catching more fish than allowed by the rate of recovery of their populations and creating mountains of waste, humanity exceeds the planet's capacity to produce food, energy and many other ecological services essential to life.

The main objective of sustainable development is to maximize human welfare.

In 1987 the World Commission on Environment and Development (the Commission Brundtland) gave the definition of sustainable development:

... development that meets the needs of the present without compromising the ability of future generations to meet their own needs. (WCED 1987, p. 8)
paidi









The concept of sustainable development emerged from the widespread concern about current and future social and environmental effects of economic growth.

The first approach on the issue of sustainable development was during the United Nations Conference on Environment and Development held in Rio de Janeiro in 1992 referred to as a "summit to protect the land of Rio.

The Agenda 21 agreement provided guidance on the wide range of policy issues surrounding sustainable development. This agreement shall classify the activities of sustainable development into six broad themes:
• quality of life
• Efficient use of natural resources
• managing the collection of human population
• protection of public wealth
• waste management and
• sustainable economic growth (World Bank 1997a). Key Objectives of Sustainability
• enhance individual and collective well-being and welfare by following a path of economic development that protects the welfare of future generations.
• allows justice within and between generations and
• protect biodiversity and maintain ecosystem intact.

While the concept of sustainability is based particularly in science and natural resource management, sustainable development has applications in the wider concerns for the welfare and justice.
• economic
• Environmental
• Social Environmental concerns, such as those related to resource management are important issues for sustainable development. But while the management of the natural environment is a concern of governments for some time, the significant environmental problems remain unresolved. Like:
• Loss of habitat and reduce biodiversity
• Degradation of soils
• Degradation of air quality
• Climate change
• Degradation of groundwater
• Reduction of renewable resources such as forests and old populations of fish
• Degradation of marine ecosystems (SEAC 1996).
xeria













Environmental concerns are an essential aspect of sustainable development, but not alone. Sustainable development is connected with several other issues that reflect the complex interactions between the three components of sustainability. The World Bank has identified key challenges of sustainability at the international level, covering economic, social aspects such as:
• Poverty Reduction
• Doubling of food production Johannesburg Summit 2002

Summarized in the Declaration on Sustainable Development as agreed and signed by the members who participated in the Earth Summit of 2002, resulting in summary the following
• decoupling economic growth from resource overuse
• promote more sustainable patterns of energy production and consumption.

More specifically limit emissions in the production industry, producing more renewable energy, encouraging sustainable modes and attitudes and reduce the pressure of industrialized agriculture on the quality of groundwater and soil.

The Commission on Sustainable Development United Nations established in 1992 to implement the agreement of Agenda 21 in Rio. These committees meet annually as part of a two-year cycle focusing on specific issues. The course focuses on the 2008/2009:
• Africa
• Agriculture
• regional development
• soil
• drought
• desertification Africa is included as a topic of the Commission of SD because of their special relationship with agriculture, rural development, land, drought and desertification that is familiar to African economies.

Most African economies are still based on agriculture. Therefore, any effort to eradicate poverty will require increasing agricultural production and rural development.

In Chapter 14 of Agenda 21 identifies the program areas to promote the objectives of the Sustainable Agriculture and Rural Development as:
• training initiatives,
• financial incentives
• technological development
• resource management and
• environmental protection

To promote the sustainable target agriculture and rural development (SARD) With target to:
• To strengthen food safety
• To meet the growing demand for food
• To increase the production of soil
• To enrich the soil unsuitable for food production

The major causes of soil degradation are:
• inappropriate land use (particularly unacceptable farming practices) and
• Deforestation leading ultimately to a reduction in capacity of the soil.

Any effort to improve resource management and environmental protection in agriculture and rural development must therefore include strict measures to manage their land Linking environmental protection and economic development, governments are able to use soil resources more efficiently, promoting the objectives of sustainable development.