Plant and Plant Resources

Characteristics of Sap Flow of Dwarf Red Jujube Trees and the Response to Environmental Factors in South Xinjiang

  • LIU Yi ,
  • JIN Qian ,
  • GUI Dong-wei ,
  • XUE Jie ,
  • SUN Huai-wei ,
  • YAN Dong ,
  • ZENG Fan-jiang
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  • 1. Xinjiang University,Urumqi 830046,Xinjiang,China;
    2. State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences, Urumqi 830011,Xinjiang,China;
    3. Qira National Field Station for Desert Steppe Ecosystem Observation and Research Qira 848300,Xinjiang,China;
    4. School of Hydropower & Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China

Received date: 2019-02-06

  Revised date: 2019-04-18

  Online published: 2025-10-14

Abstract

In this paper,the characteristics of sap flow of the dwarf red jujube trees in the Qira Oasis were analyzed,and the relationship between the sap flow and environmental factors was researched.The results showed that the curve of daily variation of sap flow was unimodal,and it was occasionally bimodal in summer.Weather conditions affected significantly the change of sap flow,the sap flow rate was the highest on sunny day,then under sand and dust weather,and it was the lowest on rainy day.The seasonal difference of sap flow rate was significant,the sap flow started earlier in summer than that in spring and autumn; the duration of sap flow was the longest in summer,it was relatively short in spring and autumn; the peak value of sap flow was the highest in summer but low in spring and autumn.There was a significantly positive correlation between the sap flow rate and the solar radiation intensity and air temperature,but a significantly negative one between the sap flow rate and the relative humidity.Among the environmental factors,the effect of solar radiation intensity on the sap flow rate was the highest,then that of air temperature,and that of the relative humidity was the lowest.

Cite this article

LIU Yi , JIN Qian , GUI Dong-wei , XUE Jie , SUN Huai-wei , YAN Dong , ZENG Fan-jiang . Characteristics of Sap Flow of Dwarf Red Jujube Trees and the Response to Environmental Factors in South Xinjiang[J]. Arid Zone Research, 2019 , 36(5) : 1146 -1152 . DOI: 10.13866/j.azr.2019.05.11

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