evapotranspiration; climate change,human activity,driving force,arid and semiarid regions ,"/> Progress on Evapotranspiration Estimation Methods and Driving Forces in Arid and Semiarid Regions

Arid Zone Research ›› 2020, Vol. 37 ›› Issue (1): 26-36.

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Progress on Evapotranspiration Estimation Methods and Driving Forces in Arid and Semiarid Regions

LI Xiao-yuan, YU De-yong   

  1. State Key Laboratory of Earth Surface Processes and Resources Ecology, Faculty of Geographical Science, Beijing Normal University,Beijing 100875,China
  • Received:2019-01-29 Revised:2019-09-15 Online:2020-01-15 Published:2020-01-15

Abstract:

Evapotranspiration (ET), a fraction of the hydrological cycle, is a key indicator used to measure the transport of water and energy in the soil-vegetation-atmosphere coupling system. Thus, it is important for the efficient utilization of water resources in arid and semiarid regions to accurately estimate the evapotranspiration and understand its driving forces. In this paper, the estimation methods of regional evapotranspiration were summarized, and the driving forces of evapotranspiration change were discussed from the perspectives of climate change and human activities. Finally, the existing issues that should be further studied were discussed. In the future research, we should strengthen the improvement of the evapotranspiration estimation model and promote the land system optimization so as to improve the water resources utilization and promote the regional sustainable development.

Key words: evapotranspiration; climate change')">

evapotranspiration; climate change, human activity, driving force, arid and semiarid regions