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Bulletin of Botanical Research ›› 2024, Vol. 44 ›› Issue (2): 168-179.doi: 10.7525/j.issn.1673-5102.2024.02.002

• Systematic and Evolutionary • Previous Articles     Next Articles

Prediction of the Geographical Distribution Pattern of Rhodiola tangutica(Crassulaceae) under the Background of Climate Change, an Endemic Species from the Qinghai-Tibet Plateau

Xiaoli LI1,2, Xu SU1,2,3, Dong WANG4, Yuping LIU1,2,3(), Jinyuan CHEN1,2, Chenglin SUN1,2   

  1. 1.School of Life Sciences,Qinghai Normal University,Xining 810008
    2.Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Tibet Plateau in Qinghai Province,Qinghai Normal University,Xining 810008
    3.Academy of Plateau Science and Sustainability,Qinghai Normal University,Xining 810016
    4.School of Geographical Science,Qinghai Normal University,Xining 810008
  • Received:2023-06-05 Online:2024-03-20 Published:2024-03-11
  • Contact: Yuping LIU E-mail:lyp8527970@126.com

Abstract:

To explore the potential suitable distribution and ecological adaptability of Rhodiola tangutica on the Qinghai-Xizang Plateau, based on 38 distribution sites of Rhodiola tangutica across the plateau and seven environmental factors across current and future five periods, a relationship model between the distribution of Rhodiola tangutica and environmental factors was constructed using the MaxEnt model. The potential geographical distribution patterns for the current period(1970-2000) and four future periods(2030s, 2050s, 2070s and 2090s) under the SSP245 scenario were simulated and verified. The findings revealed that: (1)Altitude(Alt) and precipitation of the driest month(Bio14) were the most important ecological factors influencing the geographical distribution of Rhodiola tangutica, contributing rates of 89.3% and 4.9%, respectively. (2)under the current climatic context, the total suitable distribution area of Rhodiola tangutica on the Qinghai-Xizang Plateau was approximately 195.21×10? km2, predominantly situated in the southern and northeastern parts of Qinghai, northwestern Sichuan, and central Xizang. (3)compared with the current period, the total suitable distribution area of Rhodiola tangutica in the next four periods would not change obviously; however, the area of high suitability would increase, with a tendency of concentrated distribution to the central Qinghai-Xizang Plateau.

Key words: Rhodiola tangutica, Climate change, Potential distribution prediction, Maximum entropy model

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