poster - International Conference of Agricultural Engineering

FIGURE 5. A – Area of exploitation of clay - level serious of land degradation. B and
C – Partial view of slopes of the Araripe Mountain, showing areas of landslides.
Municipality of Barbalha.
In several places the exploitation of clay (Fig. 6 A and B), to supply the ceramic industries in
the region, is present, as well as extensive areas explored in cattle raising that surpass the
other agricultural activities, such as sugarcane. The mountain slopes are being cleared to
supply as much the potteries of firewood as a cheaper source of energy and for use as
pasture. The biomass burning was fairly observed during field work (Fig. 6 C).
FIGURE 6: A – Area of exploitation of clay. B – Another view of area of exploitation of clay.
C – Biomass burning
Analyzing the land degradation in the municipality of Marcolândia, State of Piauí, and
considering the years 1987, 2003 and 2008 (Fig. 7), the level very low of land degradation
occurs only in 1987.
FIGURE 7: Digital maps of the levels of land degradation.
Municipality of,Marcolândia, State of Piauí.