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… the objective is to maintain and improve the quantity and quality of productive land. The conference called for … land degradation to support decision making in land and water management ” and in 2013 in Bonn on “Economic … at present one of the most widely used indices are the Standard Precipitation Index (SPI) developed by McKee et al., …

… their livelihoods. As a consequence it undermines food, water and livelihood security, human health, and energy … where it is defined as a “state whereby the amount and quality of land resources necessary to support ecosystem … and sustainable land management interventions. Agreeing on standard indicators will facilitate cross-country comparison …