干旱区生态环境知识资源中心(Arid): Remote-Sensing-Based Analysis of Spatiotemporal Variation of ET and Related Parameters in Xilingol Steppe, China

Arid

DOI	10.15244/pjoes/129964
	Remote-Sensing-Based Analysis of Spatiotemporal Variation of ET and Related Parameters in Xilingol Steppe, China
	Zhang, Qiaofeng; Di, Liping; Liu, Guixiang; Guo, Liying; Yu, Hongbo
通讯作者	Di, LP (corresponding author), George Mason Univ, Ctr Spatial Informat Sci & Syst, Fairfax, VA 22031 USA.
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2021
卷号	30 期号:3 页码:2891-2904
英文摘要	Evapotranspiration (ET), as the main ecological water consumer, is crucial to assess the ecological water budget and dry conditions in arid and semi-arid areas. The objective of this study was to characterize the spatiotemporal variations of ET and determine the major parameters affecting ET by using remote sensing data and climate data at annual and seasonal scales in Xilingol steppe, China. The results of this study showed that the annual ET gradually reduced from northeast to southwest in the Xilingol steppe, with the values fluctuating around 200 mm per year during 2000-2014. The seasonal value of the spatially averaged ET was in reducing order from summer, fall, and winter to spring, accounting for approximately 35%, 23%, 22%, and 20% of the annual ET, respectively. The largest ET appeared in summer in meadow steppe, typical steppe, and sandy vegetation steppe, while in the desert steppe, it occurred in winter, accounting for 39% of the annual ET. Precipitation and NDVI are the major parameters positively affecting ET in spring, summer, and fall. However, in winter, ET was positively correlated with temperature and negatively correlated with precipitation. The results indicated that the spatiotemporal characteristics and the affecting parameters of the actual ET vary seasonally and that the characteristics of the annual ET are mainly determined by the growing season (spring-fall). Moreover, vegetation growth is directly correlated with ET and sunshine hours rather than other parameters. Combining with the natural conditions, the conclusions can be deduced that the dry conditions in the meadow and typical steppes are probably caused by uneven precipitation distribution and high ET demands during the growing season, while the low annual precipitation combined with high winter evaporation is the main reason for water scarcity in the desert steppe.
英文关键词	evapotranspiration (ET) NDVI meteorological factors Xilingol steppe
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000668150000007
WOS关键词	ENERGY BALANCE ALGORITHM ; INNER-MONGOLIA ; PRECIPITATION ; TEMPERATURE ; VEGETATION ; GRASSLAND ; VARIABILITY ; RESPONSES ; DYNAMICS ; MOISTURE
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/2XILL650/351414
作者单位	[Zhang, Qiaofeng; Yu, Hongbo] Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Inner Mongolia, Peoples R China; [Zhang, Qiaofeng; Di, Liping; Guo, Liying] George Mason Univ, Ctr Spatial Informat Sci & Syst, Fairfax, VA 22031 USA; [Zhang, Qiaofeng; Liu, Guixiang] Chinese Acad Agr Sci, Grassland Res Inst, Hohhot 010010, Inner Mongolia, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qiaofeng,Di, Liping,Liu, Guixiang,et al. Remote-Sensing-Based Analysis of Spatiotemporal Variation of ET and Related Parameters in Xilingol Steppe, China[J],2021,30(3):2891-2904.
APA	Zhang, Qiaofeng,Di, Liping,Liu, Guixiang,Guo, Liying,&Yu, Hongbo.(2021).Remote-Sensing-Based Analysis of Spatiotemporal Variation of ET and Related Parameters in Xilingol Steppe, China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,30(3),2891-2904.
MLA	Zhang, Qiaofeng,et al."Remote-Sensing-Based Analysis of Spatiotemporal Variation of ET and Related Parameters in Xilingol Steppe, China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 30.3(2021):2891-2904.