干旱区生态环境知识资源中心(Arid): Characterizing the spatiotemporal variations of evapotranspiration and aridity index in mid-western China from 2001 to 2016

Arid

DOI	10.1007/s40333-021-0087-0
	Characterizing the spatiotemporal variations of evapotranspiration and aridity index in mid-western China from 2001 to 2016
	Mu Le; Lu Yixiao; Liu Minguo; Yang Huimin; Feng Qisheng
通讯作者	Yang, HM ; Feng, QS (corresponding author), Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Peoples R China.
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2021
英文摘要	Mid-western China is one of the most sensitive and fragile areas on the Earth. Evapotranspiration (ET) is a key part of hydrological cycle in these areas and is affected by both global climate change and human activities. The dynamic changes in ET and potential evapotranspiration (PET), which can reflect water consumption and demand, are still unclear, and there is a lack of predictive capacity on drought severity. In this study, we used global MODIS (moderate-resolution imaging spectroradiometer) terrestrial ET (MOD16) products, Morlet wavelet analysis, and simple linear regression to investigate the spatiotemporal variations of ET, PET, reference ET (ET0), and aridity index (AI) in mid-western pastoral regions of China (including Gansu Province, Qinghai Province, Ningxia Hui Autonomous Region, and part of Inner Mongolia Autonomous Region) from 2001 to 2016. The results showed that the overall ET gradually increased from east to southwest in the study area. Actual ET showed an increasing trend, whereas PET tended to decrease from 2001 to 2016. The change in ET was affected by vegetation types. During the study period, the average annual ET0 and AI tended to decrease. At the monthly scale within a year, AI value decreased from January to July and then increased. The interannual variations of ET0 and AI showed periodicity with a main period of 14 a, and two other periodicities of 11 and 5 a. This study showed that in recent years, drought in these pastoral regions of mid-western China has been alleviated. Therefore, it is foreseeable that the demand for irrigation water for agricultural production in these regions will decrease.
英文关键词	evapotranspiration aridity index climate change human activities vegetation cover arid areas
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000726265700001
WOS关键词	SHIYANG RIVER-BASIN ; CLIMATE-CHANGE ; PAN EVAPORATION ; POTENTIAL EVAPOTRANSPIRATION ; MODIS ; TRENDS ; PRECIPITATION ; TEMPERATURE ; SENSITIVITY ; PRODUCTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374687
作者单位	[Mu Le; Lu Yixiao; Liu Minguo; Yang Huimin; Feng Qisheng] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Mu Le,Lu Yixiao,Liu Minguo,et al. Characterizing the spatiotemporal variations of evapotranspiration and aridity index in mid-western China from 2001 to 2016[J],2021.
APA	Mu Le,Lu Yixiao,Liu Minguo,Yang Huimin,&Feng Qisheng.(2021).Characterizing the spatiotemporal variations of evapotranspiration and aridity index in mid-western China from 2001 to 2016.JOURNAL OF ARID LAND.
MLA	Mu Le,et al."Characterizing the spatiotemporal variations of evapotranspiration and aridity index in mid-western China from 2001 to 2016".JOURNAL OF ARID LAND (2021).