IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i17p12909-d1225858.html
   My bibliography  Save this article

Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020

Author

Listed:
  • Jie Chen

    (College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China)

  • Bo Zhang

    (College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China)

  • Jing Zhou

    (College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China)

  • Feng Guo

    (College of Physics, Hebei Normal University, Shijiazhuang 050024, China)

Abstract

To study the change in drought characteristics, it is helpful to explore the dynamics of drought, analyze the rules of drought, and prevent drought. The annual and seasonal standardized precipitation evapotranspiration index (SPEI) was calculated based on the meteorological data of the temperate steppe region of China from 1960 to 2020, and the spatio-temporal variation of drought characteristics was analyzed by combining the run-course theory to identify drought characteristics. The results show that: (1) During 1960–2020, the SPEI of the temperate steppe region fluctuated in the range of −1.5 to 1.5 and decreased significantly at a rate of −0.02·a −1 ( p < 0.01). In general, there is an increasing trend of drought in the temperate steppe region. (2) There is little difference in the duration of drought in the four seasons, and the very low duration of drought is about 2 months. The cumulative drought intensity was higher in the semi-arid and semi-humid zones of the temperate zone. (3) The very low value of drought frequency occurred in summer, and the very high value of drought frequency occurred in winter. From SPEI-3 to SPEI-12, that is, from seasonal scale to interannual scale, with the increase of time scale, the distribution of the extreme value of drought frequency moved to the southwest, semi-arid, and arid areas. The frequency of the four drought levels showed light drought > middle drought > severe drought > extreme drought in all time scales and all zones.

Suggested Citation

  • Jie Chen & Bo Zhang & Jing Zhou & Feng Guo, 2023. "Temporal and Spatial Changes of Drought Characteristics in Temperate Steppes in China from 1960 to 2020," Sustainability, MDPI, vol. 15(17), pages 1-18, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12909-:d:1225858
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/17/12909/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/17/12909/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Siqin Tong & Yuhai Bao & Rigele Te & Qiyun Ma & Si Ha & A. Lusi, 2017. "Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation," Mathematical Problems in Engineering, Hindawi, vol. 2017, pages 1-11, January.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12909-:d:1225858. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.