TY - JOUR ID - 14375 TI - Effects of Dam Construction and the Karoon River’s Change of Hydrology Regime on Soil Salinity and Dust Storms of Khuzestan Plain JO - Irrigation Sciences and Engineering JA - JISE LA - en SN - 2588-5952 AU - Jafari, Siroos AD - Effects of Dam Construction and the Karoon River’s Change of Hydrology Regime on Soil Salinity and Dust Storms of Khuzestan Plain Y1 - 2020 PY - 2020 VL - 43 IS - 1 SP - 157 EP - 172 KW - Flood KW - Salt Accumulation KW - SAR KW - Gotvand Dam DO - 10.22055/jise.2018.20709.1490 N2 - Introduction      Khuzestan plain is part of Mesopotamia. This plain was long ago irrigated and drained due to floods (Rangzan and Jafari, 2017). Then, plants started to grow everywhere in this area. With the construction of dams in the past decades, the flooding was hindered; however, since soils were saline, civil plant could not grow anymore (Anonymous, 2011). Therefore, these lands became bare and dust storms started to happen in the plain. In this research, we studied soil salinity and its sources or agents in these area (Ayers and Westcot, 1976). We specially focused on evaluation of dam contractions and effects of the Karoon Rivers’ hydrology regime change on the ecology of certain areas of Khuzestan plain.   Methodology We focused on studies done by Rangzan and Jafari on the Karoon River (at Mollasani station) over a forty-year period in order to investigate its discharge and salinity changes (Anonymous, 2011). Dam construction data in the same period were collected. Also, soil salinity and alkalinity were recorded during summer for 6800 hectares in the south of Ahvaz and north of Shadegan Wetland, over a period of 25 years, in 1991 and 2011. Soil EC was also determined in extracted paste in 2017. Sodium absorption ratio (SAR) was calculated from Na, Ca, and Mg concentrations determined in these extracted pastes. Soil salinity and alkalinity (SAR) maps were drawn by Arc GIS Ver. 10.3. For this manure, ECe and SAR were partitioned in 10 levels from 0-90 and polygons were shown in these ranges for all provided maps. UR - https://jise.scu.ac.ir/article_14375.html L1 - https://jise.scu.ac.ir/article_14375_3505fb26181835f005498402913db2e9.pdf ER -