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Arid Land Geography ›› 2023, Vol. 46 ›› Issue (5): 730-741.doi: 10.12118/j.issn.1000-6060.2022.405

• Climatology and Hydrology • Previous Articles     Next Articles

Effectiveness evaluation of water consumption in agricultural land of Yanqi Basin, Xinjiang

YANG Yifei1,2(),YANG Pengnian1,2(),WANG Changshu3,KOU Xin4,TAN Fan1,2,XU Jie1,2,WANG Cui1,2   

  1. 1. College of Water Resources and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, Xinjang, China
    2. Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, Xinjang, China
    3. Changjiang Survey, Planning, Design and Research Co., Ltd., Wuhan 841314, Hubei, China
    4. Yanqi County Water Conservancy Bureau, Yanqi 841199, Xinjiang, China
  • Received:2022-08-19 Revised:2022-10-11 Online:2023-05-25 Published:2023-06-05

Abstract:

It is difficult to evaluate the water resource consumption effectiveness at a regional scale in the arid northwest due to the lack of monitoring information and other factors. This paper uses the MODIS remote sensing data to drive a hybrid dual-source trapezoidal evapotranspiration model (HTEM), to continuously simulate the spatiotemporal processes of land surface evapotranspiration in the Yanqi Basin of Xinjiang, China, and to evaluate the effectiveness of water consumption in irrigation areas. The following results were obtained: (1) The multiyear average evapotranspiration in the irrigation area of Yanqi Basin from 2013 to 2020 is 624.4 mm, of which the evapotranspiration from April to October during the crop fertility period accounts for 89.6% of the year. (2) The multiyear average of vegetation evapotranspiration and soil evaporation in the irrigation area is 508.9 mm and 115.5 mm, respectively, accounting for 81.5% and 18.5% of the total evapotranspiration. (3) The multiyear average evapotranspiration water consumption in the irrigation area was 13.82×108 m3, of which high-, medium-, and low-efficiency water consumption accounted for 81.5%, 5.6% and 12.9% of the total water consumption, respectively, and the effectiveness of water consumption was closely related to the vegetation cover. This study reveals the effectiveness of evapotranspiration water consumption in irrigation areas on a regional scale with a spatiotemporal continuum, which can provide a reliable theoretical basis for water resource control in arid zones.

Key words: evapotranspiration, hybrid dual-source trapezoidal evapotranspiration model (HTEM), water consumption effectiveness, Yanqi Basin