干旱区生态环境知识资源中心(Arid): Channel Adjustments in Iranian Rivers: A Review

Arid

DOI	10.3390/w11040672
	Channel Adjustments in Iranian Rivers: A Review
	Khaleghi, Somaiyeh 1; Surian, Nicola 2
通讯作者	Khaleghi, Somaiyeh
来源期刊	WATER
EISSN	2073-4441
出版年	2019
卷号	11 期号:4
英文摘要	Channel adjustments in Iranian rivers have been intense over the last decades due to natural and human factors. Iran has six major basins, all with different climates, from very humid to very arid. This work is a review of the available studies and data about channel adjustments in Iranian rivers, and aims to reconstruct a first outline, at a national scale, of types, magnitude, and causes of adjustments. The results show that most of the rivers have undergone incision (1 to 2 m and, in some cases, up to 6 to 7 m) and narrowing (from 19% to 73%), although widening (from 22% to 349%) has occurred in some rivers. Narrowing is due to dams and sediment mining; widening is due to climate change and sediment mining. Incision is due to gravel and sand mining, dams, channelization, with in-channel mining being the main cause of incision. Channel adjustments have occurred in basins with different climates, but it seems that widening has been more intense in arid and semi-arid climates. Such adjustments have several negative effects (e.g., damage to bridges, degradation of river ecosystems, and instability of banks). The comparison between Iran and other countries shows that narrowing and incision have been the dominant processes in most of the rivers, while damming and in-channel mining have been used as the main controlling factors. Data about adjustments in Iranian rivers are neither homogeneous nor complete for all the rivers. This lack of completeness implies that our understanding of channel changes, and their causes, should be improved by further investigation.
英文关键词	channel adjustments incision narrowing human interventions Iranian rivers
类型	Review
语种	英语
国家	Iran ; Italy
开放获取类型	Green Published, Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000473105700042
WOS关键词	LAND-USE ; GEOMORPHIC RESPONSE ; MEANDERING REACH ; MORPHOLOGY ; STREAM ; MOUNTAIN ; ERUPTION ; FLOOD ; URBANIZATION ; DOWNSTREAM
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219195
作者单位	1.Shahid Beheshti Univ, Sch Earth Sci, Dept Phys Geog, Tehran 1983969411, Iran; 2.Univ Padua, Dept Geosci, I-35131 Padua, Italy
推荐引用方式 GB/T 7714	Khaleghi, Somaiyeh,Surian, Nicola. Channel Adjustments in Iranian Rivers: A Review[J],2019,11(4).
APA	Khaleghi, Somaiyeh,&Surian, Nicola.(2019).Channel Adjustments in Iranian Rivers: A Review.WATER,11(4).
MLA	Khaleghi, Somaiyeh,et al."Channel Adjustments in Iranian Rivers: A Review".WATER 11.4(2019).