Capacidade de infiltração em solos de áreas susceptíveis a desertificação no município de Cabaceiras - PB

Abstract

This research has as object of study the desertification, a series of process that acquired international attention focused to the degradation on the arid, semiarid and dry sub -humid lands, located worldwide accompanied with socio-economic impacts due anthropic intervention in high vulnerability places, charged for a series of environmental imbalances. According to the desertification process, adopted in the research as the product of anthropic intervention, that starts with vegetation cover’s reduction accompanied with particular effects in the soils, we take the physical degradation to analyze the compaction and densification’s index and its consequences in the hydraulic conductivity, immediately linked to biomass, when the lower expression, assigned large responsibility to the perception of desertification in such area. The soil degradation and its relationship with desertification is elucidated for the settle down of the conditions that allow the occurrence of predatory anthropic process, term used for Brazil (2004) to designate the soil wastage by the high intensity use, higher than the supportability, once broken down the limits, gets further chance to settle down desertification. By means of the bioindicator compaction, was analized the soil capacity to store water available to the vegetation’s maintenance, this one, regulator of physic, chemistry, biologic and climatic properties of soil, through the organic matter. Was proved that even tenuous, a vegetated soil offers apropriated conditions to a eventual vegetation reconstitution, hence the recover of the nessecery conditions to support life, unlike one soil completely exposed with higher chances to looses by erosion and development of propitious conditions to achieve desertified landscape.