Sustainable Agricultural Development In Sw Tunisia/ Survival Sector And Natural Resources Degradation

Abstract

Agricultural production relies on numerous interrelated key factors namely irrigation technique, drainage, soil quality … and irrigation water quality that has gained less concern in the agricultural management process. However, the evaluation of the used quality for irrigation especially for long-term use is of crucial importance. Unfortunately, no comprehensive classification based on the assessment of the complex causality links of chemical water composition of the different environmental components that is suitable for the accurate evaluation of the used quality at a local particular scale was found. Thus, to gain an overall impression of the different methods and approaches a review of the previously published diagrams in the light of the effectiveness and representativeness of the obtained results about the various factors related to farming practices and land characteristics is required. Hence, the purpose of this paper is to represent new diagrams used in future studies as classification approaches. New classification techniques are introduced and described based on the previously used approaches coupled with the consideration of variables soil physic-chemical properties and climate conditions. The resulting schema is used to classify a variety of different approaches operating at multiple levels of characteristics and interaction levels (structure, texture, permeability ...).

Keywords

• water quality
• assessment
• environmental impacts
• agricultural sustainability