Spatial and Temporal Variations of Terrestrial Evapotranspiration in the Upper Taohe River Basin from 2001 to 2018 Based on MOD16 ET Data
Joint Authors
Cheng, Lizhen
Yang, Meixue
Wang, Xuejia
Wan, Guoning
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-28
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Evapotranspiration (ET) is an essential component of watershed hydrological cycle.
Spatial-temporal variations analyses of evapotranspiration and potential evapotranspiration (PET) have remarkable theoretical and practical significances for understanding the interaction between climate changes and hydrological cycle and optimal allocation of water resources under global warming background.
The MODIS-estimated ET agreed well with basin evapotranspiration from water balance principle methods in the study.
The spatiotemporal variations results based on MOD16 ET data showed the following: (1) multiyear mean ET and PET were 464.2 mm and 1192.2 mm, and annual ET showed an upward trend at a rate of 3.48 mm/a, while PET decreased significantly at a rate of −8.18 mm/a.
The annual ET trend showed a complemental relationship with PET; (2) at the seasonal scale, ET was highest in summer and least in winter, while PET was higher in spring and summer.
The change of ET and PET in spring and summer had a great contribution to the annual variations; (3) ET and PET in the northern part were significantly stronger than those in the western and southern parts; (4) ET in cropland increased significantly, while PET decreased obviously in grass and forest; (5) changes of ET and PET were closely related to climatic factors.
The rise in temperature caused the increase in ET and the decrease of wind speed contributed more to the decrease in PET.
The results can provide a scientific basis for water resources planning and management.
American Psychological Association (APA)
Cheng, Lizhen& Yang, Meixue& Wang, Xuejia& Wan, Guoning. 2020. Spatial and Temporal Variations of Terrestrial Evapotranspiration in the Upper Taohe River Basin from 2001 to 2018 Based on MOD16 ET Data. Advances in Meteorology،Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1126831
Modern Language Association (MLA)
Cheng, Lizhen…[et al.]. Spatial and Temporal Variations of Terrestrial Evapotranspiration in the Upper Taohe River Basin from 2001 to 2018 Based on MOD16 ET Data. Advances in Meteorology No. 2020 (2020), pp.1-17.
https://search.emarefa.net/detail/BIM-1126831
American Medical Association (AMA)
Cheng, Lizhen& Yang, Meixue& Wang, Xuejia& Wan, Guoning. Spatial and Temporal Variations of Terrestrial Evapotranspiration in the Upper Taohe River Basin from 2001 to 2018 Based on MOD16 ET Data. Advances in Meteorology. 2020. Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1126831
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1126831