Arid
DOI10.3724/SP.J.1227.2012.00105
Spatio-temporal pattern and changes of evapotranspiration in arid Central Asia and Xinjiang of China
Chen, Xi1; Li, BaiLian1,2; Li, Qin3; Li, Junli1; Abdulla, Saparnov4
通讯作者Chen, Xi
来源期刊JOURNAL OF ARID LAND
ISSN1674-6767
出版年2012
卷号4期号:1页码:105-112
英文摘要

Accurate inversion of land surface evapotranspiration (ET) in arid areas is of great significance for understanding global eco-hydrological process and exploring the spatio-temporal variation and ecological response of water resources. It is also important in the functional evaluation of regional water cycle and water balance, as well as the rational allocation and management of water resources. This study, based on model validation analysis at varied scales in five Central Asian countries and China’s Xinjiang, developed an appropriate approach for ET inversion in arid lands. The actual ET during growing seasons of the study area was defined, and the changes in water participating in evaporation in regional water cycle were then educed. The results show the simulation error of SEBS (Surface Energy Balance System) model under cloud amount consideration was 1.34% at 30-m spatial scale, 2.75% at 1-km spatial scale and 6.37% at 4-km spatial scale. ET inversion for 1980-2007 applying SEBS model in the study area indicates: (1) the evaporation depth (May-September) by land types descends in the order of waters (660.24 mm) > cultivated land (464.66 mm) > woodland (388.44 mm) > urbanized land (168.16 mm) > grassland (160.48 mm) > unused land (83.08 mm); and (2) ET during the 2005 growing season in Xinjiang and Central Asia was 2,168.68x10(8) m(3) (with an evaporation/precipitation ratio of 1.05) and 9,741.03x10(8) m(3) (with an evaporation/precipitation ratio of 1.4), respectively. The results unveiled the spatio-temporal variation rules of ET process in arid areas, providing a reference for further research on the water cycle and water balance in similar arid regions.


英文关键词Evapotranspiration (ET) arid areas SEBS model remote sensing Central Asia Xinjiang of China
类型Article
语种英语
国家Peoples R China ; USA ; Kazakhstan
收录类别SCI-E
WOS记录号WOS:000300387600013
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构中国科学院新疆生态与地理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/173317
作者单位1.Chinese Acad Sci, State Key Lab Desert & Oasis Ecol, Sino US Int Ctr Ecol Arid Land, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China;
2.Univ Calif Riverside, Ecol Complex & Modeling Lab, Dept Bot & Plant Sci, Riverside, CA 92521 USA;
3.Univ Jinan, Jinan 250022, Peoples R China;
4.Minist Agr Kazakhstan, UUUspanov Kazakh Res Inst Soil Sci & Agrichem, Alma Ata 050060, Kazakhstan
推荐引用方式
GB/T 7714
Chen, Xi,Li, BaiLian,Li, Qin,et al. Spatio-temporal pattern and changes of evapotranspiration in arid Central Asia and Xinjiang of China[J]. 中国科学院新疆生态与地理研究所,2012,4(1):105-112.
APA Chen, Xi,Li, BaiLian,Li, Qin,Li, Junli,&Abdulla, Saparnov.(2012).Spatio-temporal pattern and changes of evapotranspiration in arid Central Asia and Xinjiang of China.JOURNAL OF ARID LAND,4(1),105-112.
MLA Chen, Xi,et al."Spatio-temporal pattern and changes of evapotranspiration in arid Central Asia and Xinjiang of China".JOURNAL OF ARID LAND 4.1(2012):105-112.
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