Assessment of drought risk index using drought hazard and vulnerability indices
- PDF / 2,434,630 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 65 Downloads / 231 Views
ORIGINAL PAPER
Assessment of drought risk index using drought hazard and vulnerability indices M. Nasrollahi 1 & H. Khosravi 2 & A. Moghaddamnia 2 & A. Malekian 2 & S. Shahid 3 Received: 1 June 2017 / Accepted: 5 October 2018 # Saudi Society for Geosciences 2018
Abstract This study attempts to determine the spatial and temporal patterns of drought hazard and risk in Semnan province, Iran. Drought risk assessment has been conducted in eight counties of Semnan province using a conceptual framework which emphasizes on the combined role of hazard and vulnerability in defining droughts. The standardized precipitation index (SPI) at synoptic stations at 3 and 12-month time step for period 1985–2011 were used to provide drought hazard index (DHI) map using kriging interpolation and natural break methods by ArcGIS 9.3 software. Eight obtainable/quantifiable socioeconomic and physical indicators including population density, rural ratio, agricultural occupation, irrigated land, food production, and municipal, industrial, and agricultural water consumption were used to provide the map of drought vulnerability index (DVI). Finally, the map of drought risk index (DRI) was provided through the integration of DHI and DVI maps. The overall results showed that at 3-month timescale Shahroud and Damghan and at 12-month timescale Shahroud, Damghan, and Semnan are the most susceptible regions to drought in central Iran. Therefore, consideration of virtual water, cultivation of products with less water requirement and use of appropriate irrigation methods can be two important factors in water demand management which should be addressed by water resource managers. Keywords Drought . Risk management . Hazard . Vulnerability . Semnan province
Introduction Droughts are common phenomena in Iran and often cause major damage to socioeconomic environment and human-natural system. Droughts are much more devastating in arid and semi-arid provinces of Iran especially such as Semnan. Crop damage and suffering of people due to lack of water are almost every year phenomena in central Iran (Nasrollahi 2015). The government initiatives on drought management have been largely on response and recovery of drought, and very little attention has been paid to mitigation, preparedness, and monitoring of droughts in Iran. A shift in drought management from crisis management approach to risk management approach has been urged across * H. Khosravi [email protected] 1
Faculty of Kavirshenasi, University of Semnan, Semnan, Iran
2
Department of Arid and Mountainous Reclamation Region, Faculty of Natural Resources, University of Tehran, Karaj, Iran
3
Faculty of Civil Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
the world. One of the main aspects of drought management includes reliable drought risk assessment, since it provides the relationship between a hazard and society (Noorian et al. 2004). Droughts can be classified into different categories such as meteorological, hydrological, agricultural, and socioeconomic (Wilhite and Gla
Data Loading...
