Resumo

LOBO, Deyanira et al. Analysis of precipitation aggressiveness and concentration in Venezuela: I. The region of Los Llanos. Bioagro [online]. 2010, vol.22, n.3, pp.169-176. ISSN 1316-3361.

The delineation of zones with different precipitations can be considered as basis for sustainable land use and management. With the objective to evaluate the aggressiveness and concentration of the precipitation in Los Llanos region of Venezuela, monthly precipitation data coming from 96 weather stations were analyzed by calculating the modified Fournier index (MFI) and the precipitation concentration index (PCI). The values were subjected to univariated and geostatistical analysis. For mapping the precipitation variable, kriging was used for interpolation and the results edited with ArcView. It was found that a zone with high precipitation concentration and aggressiveness exists in the center of the study area, including the central-south region of Guárico State, the West part of Anzoátegui State and the East part of the Apure and Barinas States, while in the rest of the area a combination of moderate seasonal precipitation with high to very high rain aggressiveness can be considered.

Palavras-chave : Geostatistics; modified Fournier Index; precipitation concentration index; sustainable land management.