MONITORAMENTO DO SOLO EM ÁREAS DEGRADADAS EM PROCESSO DE RECUPERAÇÃO NO MUNICÍPIO DE SÃO JOÃO DO CARIRI. SEMIÁRIDO PARAIBANO
Desertification is an environmental problem that degrades lands susceptibles to the actions of arid, semi-arid and dry subhumid climates, however it is a consequence of human activities or natural factors. In Brazil, the areas that are susceptible to desertification are found in great part within the semi-arid region, which covers most of the Brazilian Northeast and a small part of the Southeast. This work aimed to evaluate possible changes from the edaphic point of view in desertified areas after the isolation and recovery process. Analyzing the effects of isolation on soil chemical and physical characteristics. Was monitored possible changing at the physical and chemical soil characteristics, including xerophytic cultures (impacted area), witness area(native shrub or herbaceous vegetation) and external area. Therefore, two soil samples were collected at a profundity of 0,20 composing a composite sample. As for physical characteristics, a sandy texture was highlighted, both in internal and external area regardless their history in terms of anthropization. As for soil density of the surveyed area, the highest values were equal to Intern Impact (1,77 g/cm³), Maracajá (2013) obtained bigger values for Witness Impact (1,28 g/cm3). As for chemical analysis, some of the elements obtained significant values (Phosphorus, Sodium, Potassium, Calcium, Magnesium). pH has confirmed alkaline tendency for the areas. It has not been found Aluminum in any of them. SB values for the surveyed area varied in some areas presenting identicals to the ones obtained for CTC. There were a sensitive reduction of MO during 2012 and 2016. The increase of soil density observed and the reduction of K and Ca may be associated to the reduction of MO in all analyzed samples.
Desertificação - Monitoramento do Solo, Áreas Degradadas, Fauna Edática - Semiárido Paraibano
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