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analysis of the role of dispersion of rural settlements against natural hazards in south khorasan province
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نویسنده
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hodaei aliasghar ,feizi vahid
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منبع
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journal of rescue and relief - 2021 - دوره : 13 - شماره : 3 - صفحه:202 -213
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چکیده
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Introduction: identification of the settlements located in high-risk zones in terms of naturalhazards is one of the first steps in risk management and development planning. this studyaimed to identify villages exposed to earthquakes and floods in south khorasan province.methods: the present study used the analytic hierarchy process method to evaluate thevalidity and reliability of measuring instruments through exploratory factor analysis. since thevalue of the kmo index was 0.879, the number of samples was sufficient for analysis. moreover,the significance of the bartlett test was less than 5% and cronbach's alpha coefficient wasobtained at 0.856; accordingly, the questionnaire was reliable.findings: based on the spatial analysis of the seismic vulnerability, 214 and 502 villages werein the zone of very high and high vulnerability, respectively. moreover, the results of floodvulnerability showed that the southern and northwestern parts of south khorasan province hadthe lowest vulnerability. the number of villages located in the very high vulnerable zone wasvery limited and included only seven villages of chenesht, kalateh abbas, takti ti, tangelbehdan, ebru, khankuk, and ostan siah, which are located in the east of the province.conclusion: based on the integrated results of two hazards (i.e., earthquakes and floods), it isobserved that 523 rural settlements are in a very high-risk zone, which accounts for 14.7% of thetotal settlements in the south khorasan province, compared to the total rural settlements.furthermore, the highest dispersion frequency of rural settlements is in the zone of moderatevulnerability. this zone with 1,344 settlements includes about 37.7% of the total settlements inthe province.
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کلیدواژه
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earthquake ,flood ,rural dispersion ,spatial zoning ,south khorasan ,earthquake ,flood ,rural dispersion ,spatial zoning ,south khorasan
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آدرس
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iran helal applied sciences and higher education institute, iran, university of tehran, iran
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پست الکترونیکی
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vahid.feizi62@gmail.com
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Authors
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