Reza Lagzian; Amir Sadoddin; Majid Ownegh; Akbar Alipoor
Abstract
One of the major issues that residential and industrial zones encountered is lack of stormwater management for these areas that can lead to inundation problem. This research aims to solve the problem of inundation as well as the shortage of water sources in Neyshabur City. Following the identification ...
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One of the major issues that residential and industrial zones encountered is lack of stormwater management for these areas that can lead to inundation problem. This research aims to solve the problem of inundation as well as the shortage of water sources in Neyshabur City. Following the identification of the executable stormwater management actions and developing 32 management scenarios for the city, the impacts of implementing the scenarios were predicted considering technical, environmental, hydrologic, economic and social criteria. The scenarios were prioritized using a multi-criteria decision making technique. The analysis based on the weighs elicited using the Delphi method among participants having tertiary education, indicates that scenario 24 (combination of bioretention, infiltration basin, and underground detention) is considered as the preferred scenario. But for the case of the participants under tertiary education, scenario 28 (combination of bioretention, infiltration trench, infiltration well, porous pavement, infiltration basin, and underground detention) is considered as the best scenario. The outcomes of the current research, explicitly assist the managers and planners in Neyshabur City to manage urban stormwater more effectively and can also implicitly provide suitable research model for other urban watersheds to be adopted by researchers and practitioners.
Seyed Hamidreza Sadeghi; Aliakbar Davudirad; Amir Sadoddin; Shahla Paimozd
Abstract
Today, land degradation is inevitable due to growing population and corresponding demands, and also economic development, unscientific and illogical utilization of resources. Monitoring and identification of factors affecting is therefore essential for controlling and management of land degradation in ...
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Today, land degradation is inevitable due to growing population and corresponding demands, and also economic development, unscientific and illogical utilization of resources. Monitoring and identification of factors affecting is therefore essential for controlling and management of land degradation in an area. However, such important issues have been less considered by experts and managers. To this end, the present study aimed to analyze the trend and identifying the important affecting factors on land degradation in the Shazand Watershed, Iran, based on the Environmental Sensitive Area Index (ESAI) for significant changes due to a variety of uses, management and industrial development from 1986 to 2014. According to the ESAI maps in five year nodes of 1986, 1998, 2008 and 2014, some 16.56, 33.39, 42.32 and 49.52 percent of the study area were in critical condition of land degradation, respectively. Based on the results, the process of land degradation in the region was increasing and land degradation was considerable in the periods leading up to 1998 and 2014. The sensitivity analysis on factors influencing land degradation in the study area also revealed that the role of vegetation, anthropogenic and managerial factors on ESAI changes were more than other factors and therefore could moderate or intensify the land degradation.