SENSITIVITY ANALYSIS OF DEDESERTIFICATIONOPTIMUM ALTERNATIVE IN FRAMWORK OF ANALYTICALHIERARCHY PROCESS(case study in area of Yazd khezr abad)

The data gathered from multi criteria decision making methods are usually inapplicableand changing , therefore an important step in applying a multi criteria decision-makingproblem (MADM) Such as Analytical Hierarchy process (AHP),is Sensitivity Analysis onout coming data's .In this essay in order to make sensitivity analysis on criteria ofdecision making and showing the final values of dedesertification solutions it is tried touse triantaphyllou statistics method.Generally in this method . at first sensitivity analysis process was done on criteria andalternatives and after determination of the most sensitive criterion and alternative the newweights of alternative on the basis of the most sensitive criterion and alternative wasreplaced in decision making matrix and calculating weight average of each line ofnormalized ,corrected Matrix, the priority degree or find weight of alternative wasachieved. meanwhile in order to achieve applicable, read and practical results, khezrabadregion in yazd was considered as a typical region in the point of desertification view. theout coming results of applying of sensitivity analysis on the basis of triantaphylloumethod in the khezrabad desert region in order to determine the corrected and find weightof effective criteria and alternative in desertification and dedesertification shows the highability of this model. In a way that after analysis of sensitivity of criteria and alternativeand finding the most sensitive criterion and alternative the priority of criteria did notchange and still the criterion of proportion and adjustment with environment(C1)with themultiple sensitivity of 0.3222 was estimated as the most sensitive criterion which after being normalized the said criterion with the preference degree of 32.6 percent was placedas the first alternative coming to this results indicates the attention of desert managementExperts to the matter of environment and the problems--- in destroying the environment .At the same time the order of alternatives did not change and the livestock grazingcontrol alternative (A4) with the sensitivity multiple of 0.1381 was estimated as the mostsensitive alternative which after calculating the new weight of the most sensitivealternative.the improper land usage Alternative (A2) with the preference degree of 23.45percent style in first place and finally by calculating the final priority order or correctedalternative it was observed that alternative A2 with the preference degree of 22.7 Pct .wasstill in the first place. and at the same time. the order of alternatives was a little changedfrom the previous form as the final priority of livestock grazing control alternative (A4)was replaced with regulating of taking water from under ground sources .(A5)