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DOI	10.1016/j.jhydrol.2020.125826
	Expected climate change impacts on rainfall erosivity over Iran based on CMIP5 climate models
	Azari, Mahmood; Oliaye, Alireza; Nearing, Mark A.
通讯作者	Azari, M (corresponding author), Ferdowsi Univ Mashhad FUM, Coll Nat Resources & Environm, Dept Range & Watershed Management, Mashhad, Razavi Khorasan, Iran.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	593
英文摘要	Climate change has some important implications for soil resource and sediment loads of rivers which may affect sustainable food production and use of river for water supply. The present study assessed the potential impacts of climate change on rainfall erosivity over Iran. Climate change data from three GCMs under two RCPs 4.5 and 8.5 were statistically downscaled using the LARS-WG model. Regional R-factor regression equations were applied to derive future rainfall erosivity. The results of this study revealed that the average annual R-factor for the observed data was 268 MJ mm ha - 1 h - 1 yr - 1. Projections revealed that in the 2040-2060 period under RCP 4.5, except arid regions in the East, other regions (encompassing 66.1%) of Iran will experience an increase in the R-factor by 2.5-22.5 % mainly in the mountain areas in the North and Northwest. Projections for RCP 4.5 in the period of 2060-2080, showed that in the arid zones in the Southeast, Center and East of Iran, the rainfall erosivity will decrease; however, in RCP 8.5, an increase in rainfall will cause an increase in rainfall erosivity in most parts of Iran. The results also indicated that soil erosion and sediment load in the 2040-2060 period may have some serious implications; therefore new strategies must be developed to attenuate the adverse effects of climate change on soil erosion and sediment deposition in reservoirs.
英文关键词	Climate change R-factor RUSLE Soil erosion Random forest
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000639853400040
WOS关键词	POTENTIAL CHANGES ; AIR-TEMPERATURE ; INTERPOLATION ; US
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350874
作者单位	[Azari, Mahmood] Ferdowsi Univ Mashhad FUM, Coll Nat Resources & Environm, Dept Range & Watershed Management, Mashhad, Razavi Khorasan, Iran; [Oliaye, Alireza] Univ Tehran, Dept Range & Watershed Management, Tehran, Iran; [Nearing, Mark A.] Univ Arizona, Tucson, AZ 85721 USA
推荐引用方式 GB/T 7714	Azari, Mahmood,Oliaye, Alireza,Nearing, Mark A.. Expected climate change impacts on rainfall erosivity over Iran based on CMIP5 climate models[J]. University of Arizona,2021,593.
APA	Azari, Mahmood,Oliaye, Alireza,&Nearing, Mark A..(2021).Expected climate change impacts on rainfall erosivity over Iran based on CMIP5 climate models.JOURNAL OF HYDROLOGY,593.
MLA	Azari, Mahmood,et al."Expected climate change impacts on rainfall erosivity over Iran based on CMIP5 climate models".JOURNAL OF HYDROLOGY 593(2021).