DOI: 10.1007/s11069-020-04387-w
论文题名: Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran
作者: Mohammadi M. ; Darabi H. ; Mirchooli F. ; Bakhshaee A. ; Torabi Haghighi A.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 2 起始页码: 2007
结束页码: 2025
语种: 英语
中文关键词: Crop water loss
; Flood damages
; Flood risk management
; GIS
; Talar watershed
; Water footprint
英文关键词: crop production
; elevation
; flood damage
; GIS
; hydrological modeling
; mapping
; risk assessment
; water footprint
; watershed
; Iran
; Mazandaran
; Talar River
英文摘要: Spatial information on flood risk and flood-related crop losses is important in flood mitigation and risk management in agricultural watersheds. In this study, loss of water bound in agricultural products following damage by flooding was calculated using water footprint and agricultural statistics, using the Talar watershed, northern Iran, as a case. The main conditioning factors on flood risk (flow accumulation, slope, land use, rainfall intensity, geology, and elevation) were rated and combined in GIS, and a flood risk map classified into five risk classes (very low to very high) was created. Using average crop yield per hectare, the amount of rice and wheat products under flood risk was calculated for the watershed. Finally, the spatial relationships between agricultural land uses (rice and wheat) and flood risk areas were evaluated using geographically weighted regression (GWR) in terms of local R2 at sub-watershed scale. The results showed that elevation was the most critical factor for flood risk. GWR results indicated that local R2 between rice farms and flood risk decreased gradually from north to south in the watershed, while no pattern was detected for wheat farms. Potential production of rice and wheat in very high flood risk zones was estimated to be 7972 and 18,860 tons, on an area of 822 ha and 7218 ha, respectively. Loss of these crops to flooding meant that approximately 34.04 and 12.10 million m3 water used for production of wheat and rice, respectively, were lost. These findings can help managers, policymakers, and watershed stakeholders achieve better crop management and flood damage reduction. © 2020, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169234
Appears in Collections: 气候变化与战略
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作者单位: Department of Watershed Management Engineering, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran; Water, Energy and Environmental Engineering Research Unit, University of Oulu, P.O. Box 4300, Oulu, FIN-90014, Finland; Department of Civil, Chemical, Environmental and Material Engineering, University of Bologna, Bologna, Italy
Recommended Citation:
Mohammadi M.,Darabi H.,Mirchooli F.,et al. Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran[J]. Natural Hazards,2021-01-01,105(2)