ارزيابي عملكرد اقدامات آبخيزداري به روش كيفي (مطالعه موردي : بخشي از حوزه آبخيزكن )

Evaluation of the Performance of Watershed Management Measures using Qualitative Method (Case Study: Part of Kan Watershed, Iran)

Implementation of watershed management activities has been started so far to prevent the ill-effects of improper utilization of natural resources but the performance evaluation of watershed management treatments in targeting goals has not yet been scientifically and logically conducted in Iran. In this article, the application of qualitative method in the evaluation of implemented watershed management projects was therefore considered. The case study was conducted in a part of Kan watershed known as Keshar, located in western Tehran, the capital of Iran, and comprises 2840 ha and 1000 population. In order to achieve the goal, the questionnaire method and Chisquare Test were used. The variations made on flood frequency, water turbidity, migration rate, barren lands utilization and crop yield were then evaluated. Almost 100 questionnaires were randomly distributed among male and females in upper and lower Keshar out of which 40 questionnaires were finalized for statistical analysis. The effectiveness of watershed management activities on considered factors was supposed as well. Hypothesis and correlation coefficient was then calculated whereas the effect of the measures was designated by hypothesis one. The results obtained from questionnaire analysis showed that the performance of watershed management measures in reducingthe numbers of flood and water turbidity was found good and these activities could affect on crop yield, migation rate and barren lands utilization at the rate of 63, 55 and 37%, respectively. The Chfsquare analysis also verified the effectiveness of watershed management measures in reducing flood frequency and water turbidity at the respective level of correition of 90.3 and 96% whereas the effectiveness of the same activities on other studied factors was found to be statistically insignificant. Considering the results obtained during the present study, besides emphasizing the qualitative and quantitative evAuation of performance of watershed management measures in achieving proposed goals, the cerebration of Chi square Test owing to ease application and significant accuracy in performance evaluation of watershed management projects using qualitative techniqus is advised.