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Title

INVESTIGATION OF TEMPERATURE PRECIPITATION AND FLOW TREND USING NONPARAMETRIC MANKENDALL (CASE STUDY: KAJU RIVER IN SISTAN AND BALUCHESTAN)

Pages

 Start Page 152 | End Page 158

Abstract

 Fluctuations in the meteorological variables such as: TEMPERATURE, PRECIPITATION, is one of the atmospheric circulation characteristics. Meanwhile, the sharp decrease of PRECIPITATION and dry periods caused by that has many negative effects on water resources. Climatic fluctuating in a region has severe effect on soil and water resources. Nowadays, generally it has been accepted that any change in climate system is important in the water and soil resources management. Among the climate elements, PRECIPITATION has the most fluctuation; this matter especially in Iran that the average rainfall is 250 mm is more importance. Drought and wet periods, especially drought period has been affected the KAJU watershed for a long time; and because of its long durability has been exposed to a lot of damages and injuries. The purpose of this article is Investigation of TEMPERATURE, PRECIPITATION and DISCHARGE change trend the basin watershed a period of 20 years. Mann-Kndall parametric test was used to determine trend parametric. The results show PRECIPITATION decrease trend, TEMPERATURE is ascendant trend and DISCHARGE River region is decrease trend.

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