In: Wagner W., Szekely, B. (eds.): ISPRS TC VII Symposium - 100 Years ISPRS, Vienna, Austria, July 5-7, 2010, IAPRS, Vol. XXXVIII, Part 7B 
are: Entisols, Alftsols, Inceptisols, Ultisols, and Lithic Sub- 
Groups of various orders and rock outcrops. The study area also 
has extensive areas of various drought-resistant trees and shrubs; 
mainly Caatinga Hipoxeroftla, Caatinga Hiperxerofila and 
Xerophytic Forests. The Climate of the region is semi-arid and 
has a rainfall of 300 to 700 mm per annum and temperatures from 
30 to 40 °C in the summer. 
Figure-1: Composition of northeastern part from 9 States of 
Brazil 
Figure-2: Study Area in three northeastern States of Brazil 
(Paraiba, Piaui and Ceara) 
Photo 1 (Part of Semi-Arid Region of Paraiba State) 
Photo 2 (Part of Semi-Arid Region of Paraiba State) 
Photo 3 (Part of Semi-Arid Region of Ceara State) 
581