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Acta Prataculturae Sinica ›› 2023, Vol. 32 ›› Issue (9): 50-67.DOI: 10.11686/cyxb2022420

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Quantitative classification and ordination analysis of typical plant communities in Altay Prefecture of Xinjiang

Jin-juan SU1(), Yong-ping LIU2, Li-yan LIU2, Tian-zhong WU2, Mei WANG1()   

  1. 1.Agriculture College of Shihezi University,Shihezi 832003,China
    2.Xinjiang Academy of Forestry Sciences,Urumqi 830017,China
  • Received:2022-10-27 Revised:2023-01-04 Online:2023-09-20 Published:2023-07-12
  • Contact: Mei WANG

Abstract:

To provide a theoretical basis for plant community protection and ecological restoration in Altay Prefecture of Xinjiang, the types and distribution of plant communities in Altay Prefecture of Xinjiang were studied, and the main environmental factors affecting the distribution of local communities were determined. Based on the field survey data in Altay Prefecture, taking the species importance value as the index, two-way indicator species analysis (TWINSPAN) and canonical correspondence analysis (CCA) were used to study the composition of plant communities and the dominant factors affecting community classification in Altay Prefecture. The results showed that: 1) A total of 322 species of vascular plants were recorded in 163 quadrats, belonging to 51 families and 207 genera, among which dicotyledonous plants were dominant. Asteraceae, Poaceae, Chenopodiaceae and Rosaceae were the dominant families in the study area. 2) Based on the TWINSPAN classification method, the plants in Altay Prefecture were divided into 17 associations, and the herbaceous plant communities were the majority. The vegetation types were mainly desert steppe and meadow steppe, as well as deciduous broad-leaved forest and evergreen coniferous forest. 3) CCA ordination showed that altitude was the main environmental factor affecting the distribution of local plant communities, followed by climate and soil factors.

Key words: Altay Prefecture, community classification, ordination, two-way indicator species analysis, canonical correspondence analysis