Résumé:
Celghoum laid is situated in an important and special area , which has an important economic qualification , that makes it an important and strong attractive centre , This strength created an exolus from rural and Areas Neighboring .
This situation led to a fast demographic development and a large urban movement s result the loc l uthorities c n’t control nd hold it 5 this gets negative result an the way of life and natural resources that leads to the spread of mess .
The most dangerous is that the urban extension goes through the best fertille lands , that leads to the reducing of the surfaces and the loss of employment and the lack off production .
Starting from the actual situation of the studying area questions must be sked bout “ the urb n 5 technic l nd envirement l side “ thus to h ve a wise urban extension in the future "