气候变化领域集成服务门户(CCPortal): Impacts of changes in climate and land cover-land use on flood characteristics in Gorganrood Watershed (Northeastern Iran) during recent decades

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DOI	10.1080/04353676.2018.1515578
	Impacts of changes in climate and land cover-land use on flood characteristics in Gorganrood Watershed (Northeastern Iran) during recent decades
	Irannezhad, Masoud; Minaei, Masoud; Ahmadian, Saghar; Chen, Deliang
通讯作者	Minaei, M (通讯作者)
发表日期	2018
ISSN	0435-3676
EISSN	1468-0459
起始页码	340
结束页码	350
卷号	100 期号:4
英文摘要	This study evaluated the effects of changes in climate and land cover-land use (LCLU) on flood intensity and frequency in the Gorganrood Watershed (GW) located in the northeast of Iran during recent decades. For this purpose, hydroclimatic (precipitation, temperature, and river discharge) time series recorded at nine stations placed in the GW during 1973-2014 were used. Flood characteristics in terms of mean, maximum and number of peaks at five discharge stations (Galikash, Gonbad, Huji Ghushan, Tamar, and Tangrah) sited in the outlet of GW sub-basins were determined applying the Peak-Over-Threshold (POT) method to daily specific discharges. This is designed to remove the effect of the different size of sub-basins. The whole study period was divided into three 14-years segments (1973-1986, 1987-2000 and 2001-2014) based on satellite LCLU maps produced for 1973, 1986, 2000 and 2014. In the GW and its sub-basins during recent decades, both flood intensity and frequency increased, the climate became wetter and warmer, and LCLU mostly converted from rangeland to farmland. The partial correlation analyses identified that flood frequency in GW was primarily connected to the LCLU conversions, but moderately to observed wetter and warmer climate. Similarly, the Tamar sub-basin experienced effects of LCLU and climate on the maximum and the number of peaks. In Haji Ghushan, wetter and warmer climate resulted in more intense and frequent floods. Increases in precipitation appear to have played the most important role in the higher flood frequency in Galikash.
关键词	RIVER-BASIN RUNOFF URBANIZATION CATCHMENT RAINFALL VARIABILITY STREAMFLOW EVENTS QUEBEC
英文关键词	Climate change; land use-land cover; flood characteristics; peak-over-threshold; Iran
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS记录号	WOS:000451720600002
来源期刊	GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259339
推荐引用方式 GB/T 7714	Irannezhad, Masoud,Minaei, Masoud,Ahmadian, Saghar,et al. Impacts of changes in climate and land cover-land use on flood characteristics in Gorganrood Watershed (Northeastern Iran) during recent decades[J]. 中国科学院青藏高原研究所,2018,100(4).
APA	Irannezhad, Masoud,Minaei, Masoud,Ahmadian, Saghar,&Chen, Deliang.(2018).Impacts of changes in climate and land cover-land use on flood characteristics in Gorganrood Watershed (Northeastern Iran) during recent decades.GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY,100(4).
MLA	Irannezhad, Masoud,et al."Impacts of changes in climate and land cover-land use on flood characteristics in Gorganrood Watershed (Northeastern Iran) during recent decades".GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY 100.4(2018).