FUNCTIONAL TYPOLOGY OF FARMS IN ARID REGIONS CASE OF THE OUED M’YA BOWLS (PROVINCE OF OUARGLA, ALGERIA)

The region of Oued M’ya is characterized by the coexistence of diverse types of farms, impressive diverse modes of organization and management. To apprehend this diversity, we opted for a functional typology conducted on the basis of the agronomic indicators by means of inquiries in the producing middle. The data processing by the software XL-STAT offering the possibility of realizing an MFA, has allows to highlight the strong contributions and the correlations between variables. The analysis by K-means followed by a clustering by Ascending Hierarchical Classification, has allows the determination of the variables most contributive, appears the irrigation, drainage, location, dominant culture, seniority, the workforce, fertilization, the income and the professional identity of farmer The study has, identified four clusters corresponding to the types of farms; the old irrigated farms belonging to farmer’s oases and those Bours create by the nomads; form the date tree patrimony of this region. The third type is the improved farms created by public authorities, includes the farms called “Rural Agricultural Sector” created during the colonial period and the agrarian revolution farms attributed to nomads in the objective of their settlement. The fourth type concern the new farms which group the small, medium and large sizes farms created in the framework of new programs of valorization of agricultural land and attributed to the neo-farmers.