The Flemish Ecological Network (Vlaams Ecologisch Netwerk, VEN) is based on the Spatial Structural Plan Flanders (Ruimtelijk Structuurplan Vlaanderen), while the Nature Decree (Natuurdecreet) deals with the regulation of the VEN. The VEN comprises large natural units and large natural units in development and will comprise 125,000 ha. It partly overlaps with Natura 2000. An Integral Connecting and Supporting Network (Integraal Verwevend en Ondersteunden Netwerk, IVON) buffers, supports and connects these core natural areas. The government of Flanders uses positive incentives to promote ecological quality of these supporting areas (Agentschap Natuur en Bos, n.d.).