气候变化领域集成服务门户(CCPortal): Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran

CCPortal

DOI	10.1007/s11069-020-04387-w
	Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran
	Mohammadi M.; Darabi H.; Mirchooli F.; Bakhshaee A.; Torabi Haghighi A.
发表日期	2021
ISSN	0921030X
起始页码	2007
结束页码	2025
卷号	105 期号:2
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).
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
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206435
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
推荐引用方式 GB/T 7714	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],2021,105(2).
APA	Mohammadi M.,Darabi H.,Mirchooli F.,Bakhshaee A.,&Torabi Haghighi A..(2021).Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran.Natural Hazards,105(2).
MLA	Mohammadi M.,et al."Flood risk mapping and crop-water loss modeling using water footprint analysis in agricultural watershed, northern Iran".Natural Hazards 105.2(2021).