Spatial and Temporal Variability of ET o in Xinjiang Autonomous Region of China during 1957–2017

Yanhui Jia, Xiaojun Shen (), Ruochen Yi and Ni Song ()
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Yanhui Jia: Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
Xiaojun Shen: School of Agricultural and Wine Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
Ruochen Yi: College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300392, China
Ni Song: Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China

Agriculture, 2022, vol. 12, issue 9, 1-17

Abstract: This article scientifically studies the direct impact of climate problems on the time transition of reference crop evapotranspiration in the Xinjiang Autonomous Region of China from 1957 to 2017, which is conducive to formulating irrigation scheduling and adaptive capacity countermeasures. The objective of this study is to investigate the impacts of climate change on ET o for the cotton growing seasons. The meteorological data were collected from 48 meteorological stations in the region and analyzed using the Mann–Kendall test and linear trend. The results show the following points: (1) the ET o decreases from low to high elevations, and with the increase in northern latitude. (2) The annual mean ET o and average values of ET o during the growing seasons for cotton exhibited two abrupt changes in the period 1957–2017, with the first abrupt change in 1995 to 1999 and the second abrupt change in 2006 to 2011. (3) The ET o in Xinjiang of China demonstrates a decreasing trend during 1957–1996; a significant decreasing trend during 1997–2008; and a significant increasing trend during 2009–2017.

Keywords: climate change; ET o; yield response factor; irrigation water requirement; cotton; Xinjiang (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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