The rural space destined for colonization may be intercalated by large private farms, as in Italy or Spain, or by empty areas of noncultivable land. The physical location of rural facilities is most often outside urban jurisdiction, although some market-oriented installations such as cold storage warehouses are located in larger urban centers. Self-sufficiency, maintained through rural services for storage, handling, processing, and marketing, and the economies derived from the services' independent operation enables the rural sector to better absorb dynamic changes in production functions and to protect itself from extreme market fluctuations. In order to reduce the social and economic attraction of urban centers and to stimulate the initiative of new rural communities, it may be advisable to develop the settlement area as a self-sufficient enclave, independent as far as possible from the facilities existing in the region.