干旱区生态环境知识资源中心(Arid): Impacts of droughts on rainfall use efficiency in different climatic zones and land uses in Iran

Arid

DOI	10.1007/s12517-020-06389-1
	Impacts of droughts on rainfall use efficiency in different climatic zones and land uses in Iran
	Ahmadaali, Khaled; Damaneh, Hadi Eskandari; Ababaei, Behnam; Damaneh, Hamed Eskandari
通讯作者	Ahmadaali, K (corresponding author), Univ Tehran, Coll Agr & Nat Resources, Tehran, Iran.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:2
英文摘要	The frequency, duration, and severity of droughts have increased substantially in recent decades, especially in arid and semi-arid regions of the world. Understanding the responses of Rainfall Use Efficiency (RUE) to drought in different ecosystems and climatic zones is not well understood. In this study, spatiotemporal patterns of RUE and Standardized Precipitation Index (SPI) were investigated in four biomes (agriculture, bare land, forest, and range) and eight climatic zones in Iran from 2000 to 2014 using the global MODIS data (MOD17A3) of a 1-km resolution and precipitation data from meteorological stations across the country. A decreasing spatial trend in RUE was observed from west to east and north-west to south-east implying the role of altitude on spatial variation of precipitation. Based on the proposed RUE classification, nearly 60% of Iran's lands were classified in class extremely low and experienced mild droughts during the study period. The increase of drought severity has resulted in an increase in RUE. Temporal variation of national average RUE in all land uses showed a similar trend and the maximum RUE was observed in agricultural lands followed by forest, range, and bare lands. RUE strongly responded to SPI variations across the eight climatic zones and the four biomes. We found significant and negative slopes of linear regression equations for RUE against SPI across all climatic zones, except the arid zone, representing higher accuracy in humid zones than in arid zones. Land uses showed a significant and negative regression, except in agricultural lands.
英文关键词	RUE SPI Drought Extended De Martonne classification MODIS Iran
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000612026800004
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347716
作者单位	[Ahmadaali, Khaled; Damaneh, Hamed Eskandari] Univ Tehran, Coll Agr & Nat Resources, Tehran, Iran; [Damaneh, Hadi Eskandari] Hormozgan Univ, Fac Agr & Nat Resources, Bandar Abbas, Iran; [Ababaei, Behnam] Univ Queensland, Ctr Crop Sci, Queensland Alliance Agr & Food Innovat QAAFI, Brisbane, Qld, Australia
推荐引用方式 GB/T 7714	Ahmadaali, Khaled,Damaneh, Hadi Eskandari,Ababaei, Behnam,et al. Impacts of droughts on rainfall use efficiency in different climatic zones and land uses in Iran[J],2021,14(2).
APA	Ahmadaali, Khaled,Damaneh, Hadi Eskandari,Ababaei, Behnam,&Damaneh, Hamed Eskandari.(2021).Impacts of droughts on rainfall use efficiency in different climatic zones and land uses in Iran.ARABIAN JOURNAL OF GEOSCIENCES,14(2).
MLA	Ahmadaali, Khaled,et al."Impacts of droughts on rainfall use efficiency in different climatic zones and land uses in Iran".ARABIAN JOURNAL OF GEOSCIENCES 14.2(2021).