From 2004, this scheme provides a per-hectare grazing payment, taking into account livestock density relative to land vegetation cover, with the regions of Israel divided into four categories according to pasture richness. Herd owners must follow appropriate production practices and environmental criteria. The area covered by this scheme amounted to about 60% of total agricultural land area in 2008. Preliminary research suggests that such managed grazing regimes have helped support floral diversity (OECD, 2010).