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Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (2): 255-263.DOI: 10.7522/j.issn.1000-694X.2022.00141

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Potential distribution of the genus Agriophyllum under climate change

Hong Sun1,2(), Jiyun Duan1,3, Yujie Liu1,2, Ruilan Ran1,2, Xiaofeng Li1,2, Pengshan Zhao1()   

  1. 1.Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.McGill University,Montreal 999040,Canada
  • Received:2022-07-28 Revised:2022-12-12 Online:2023-03-20 Published:2023-04-12
  • Contact: Pengshan Zhao

Abstract:

Agriophyllum squarrosum is considered as a potential crop for the future, and its wild relatives are rich in phenotypic and genetic variation, which is of great significance for the domestication and genetic modification of A. squarrosum. Based on the distribution data of five species and nine environmental variables, the potentially suitable habitats of Agriophyllum were simulated for the current and two future periods (the 2050s and 2070s), whereas different climate scenarios were included for future simulations. The Jackknife test was applied to evaluate the environmental factors affecting the suitable areas of Agriophyllum and kuenm data package to optimize model parameters. Finally, the spatial changes of suitable areas of Agriophyllum in the future were analyzed. The results showed that: (1) MaxEnt model has high accuracy in predicting the potential distribution, with the AUC value of 0.957±0.006. The current total suitable area of Agriophyllum is 1 731.50×104 km2, and the highly suitable area is 462.35×104 km2, which can be widely distributed in the mid-latitude arid and semi-arid regions of Asia. (2) Under future climate change scenarios, the potential distribution regions of Agriophyllum tend to expand to high latitudes and high altitudes. (3) Temperature is the principal environmental factor affecting the distribution.

Key words: Agriophyllum, MaxEnt, potential distribution areas, climate change

CLC Number: