THE FREQUENCY OFDROUGHTSIN THE RIVERS WATERSHED ANDWETLANDS OFKHUZESTAN PROVINCE ON THE BASIS OF DIFFERENT PARAMETERS

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ASSAREH ALI; AMIRI EBRAHIM

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Journal: JOURNAL OF WETLAND ECOBIOLOGY Year:2015 | Volume:7 | Issue:24 Page(s): 91-102

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Title

THE FREQUENCY OFDROUGHTSIN THE RIVERS WATERSHED ANDWETLANDS OFKHUZESTAN PROVINCE ON THE BASIS OF DIFFERENT PARAMETERS

Author(s)

ASSAREH ALI | AMIRI EBRAHIM | Issue Writer Certificate

Keywords

DROUGHTQ2

SPIQ2

NORMAL INDEXES OF CLIMATEQ3

RELIABLE RAINFALL INDEXQ3

NICHE METHODQ3

PNPIQ3

Abstract

Iran is an arid country with water crisis. Regarding the role of surface water in the region's ecosystems and the impact of DROUGHT on water quantity and quality, the present study was conducted to investigate the frequency of DROUGHTs in Khuzestan province. For this purpose, the annual rain fall of statistics synoptic stations were used for Dezful, Shoushtar, Behbahan, Abadan, Masjed Soleiman, Ahvaz and Izeh for a period of 20 years. Data correctness and uniformity test were done on the method of test runs and doubly mass. Then, the occurrence frequency and DROUGHTs severity was studied based on five indexes namely, analysis of rainfall data (SPI), normal threshold climate Index (RI), RELIABLE RAINFALL INDEX (DR) and the methods of Niche and PNPI. Results for SPI index showed that in the stations of Ahvaz, Dezful, Abadan, Masjed Soleiman, Behbahan, Izeh and Shoushtar were 7, 6, 6, 6, 7, 9 and 8 cases of DROUGHTs, respectively. On the basis of RI index at selected stations were 10, 3, 4, no DROUGHT, 4, 5 and 4 cases of DROUGHTs.On basis of DR index at the stations of Ahvaz, Dezful, Masjed Soleiman, Behbahan and Izeh 6 cases and at the stations of Abadan and Shoushtar 5 cases of DROUGHTs, based on Niche at the stations of Ahvaz and Dezful 5 cases, at the stations of Abadan and Behbahan 4 cases, at the stations of Masjed Soleiman 3 cases, at the stations of Shoushtar 2 cases and at the station of Izeh one case of DROUGHT were observed.However, the results of research based on PNPI index showed that at the stations of Bahaman and Izeh 9 cases of DROUGHTs, at thestationsof Ahvaz, Masjed Soleiman and Shoushtar 7 cases and at the stations of Dezful and Abadan 6 cases of DROUGHTs were occurred. The results showed that in all the studied stations during each year at least 30% DROUGHT has occurred.

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APA: Copy

ASSAREH, ALI, & AMIRI, EBRAHIM. (2015). THE FREQUENCY OFDROUGHTSIN THE RIVERS WATERSHED ANDWETLANDS OFKHUZESTAN PROVINCE ON THE BASIS OF DIFFERENT PARAMETERS. JOURNAL OF WETLAND ECOBIOLOGY, 7(24), 91-102. SID. https://sid.ir/paper/174897/en

Vancouver: Copy

ASSAREH ALI, AMIRI EBRAHIM. THE FREQUENCY OFDROUGHTSIN THE RIVERS WATERSHED ANDWETLANDS OFKHUZESTAN PROVINCE ON THE BASIS OF DIFFERENT PARAMETERS. JOURNAL OF WETLAND ECOBIOLOGY[Internet]. 2015;7(24):91-102. Available from: https://sid.ir/paper/174897/en

IEEE: Copy

ALI ASSAREH, and EBRAHIM AMIRI, “THE FREQUENCY OFDROUGHTSIN THE RIVERS WATERSHED ANDWETLANDS OFKHUZESTAN PROVINCE ON THE BASIS OF DIFFERENT PARAMETERS,” JOURNAL OF WETLAND ECOBIOLOGY, vol. 7, no. 24, pp. 91–102, 2015, [Online]. Available: https://sid.ir/paper/174897/en

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