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Ecological footprint analysis (EFA) can be used by cities to account for their on-going demands on global renewable resources. To date, EFA has not been fully implemented as an urban policy and planning tool in part due to limitations of local data availability.

Fonte: FAO

The year 2011 highlighted ongoing challenges to global food security, from food price volatility, extreme weather shocks, and famine to unrest and conflicts. On the policy front, major devel­opments at the global and national levels both offered grounds for encouragement and pointed to areas where further action is needed.

In 2011 two United Nations bodies adopted ambitious goals for halting land degradation and achieving sustainable development. These goals will be difficult, but not impossible, to meet. The evidence presented here suggests several avenues for achieving a world with no land degradation. First, efforts to promote sustainable land management need to improve local and national governance while also enhancing international cooperation.