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Journal of Desert Research ›› 2020, Vol. 40 ›› Issue (1): 145-155.DOI: 10.7522/j.issn.1000-694X.2019.00031

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Relationship between plant community distribution pattern and soil characteristics in northern sand belt of Hulunbuir Sandland

Shan Dan, Zhu Yuanjun, Wang Baizhu, Liu Yanshu, Shi Zhongjie, Yang Xiaohui   

  1. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
  • Received:2019-02-21 Revised:2019-06-06 Online:2020-01-20 Published:2020-01-18

Abstract: The study on the relationship between plant communities and soil characteristics in Hulunbuir sandyland is helpful to promote the ecological restoration and reconstruction in northern China. Based on the analysis of the survey data of 174 plots in 58 sample sites in the northern sand belt of Hulunbuir sandyland, it is found that 94 species of plants belong to 26 families and 64 genera. Among them,Compositae, Gramineae, Leguminosae and Rosaceae are the first four families, accounting for 55.33% of the total species.The investigated vegetation was divided into four types by Ward system classification. The Tsallis diversity of Carex duriuscula-Potentilla bifurca community was the highest, and the Agropyron cristatum-Potentilla acaulis-Cleistogenes squarrosa community was the lowest. There were significant difference in soil physical properties among different plant communities, but no significant difference in chemical characteristics. With the increase of soil depth, total nitrogen, total phosphorus and organic matter in each community decreased gradually, and the phenomenon of surface aggregation was obvious.The nutrient level characteristics of Carex pediformis-Stipa baicalensis, and Agropyron cristatum-Potentilla acaulis-Cleistogenes squarrosa community were significant, but the characteristics of Leymus chinensis, and Carex duriuscula-Potentilla bifurca community was not obvious. The results of CCA ordination showed that the soil factors affecting the species distribution of vegetation community were total nitrogen, total phosphorus, organic matter, pH and soil moisture, among which the effect of deep soil total nitrogen, total phosphorus and organic matter (20-40 cm)were the most significant. There are significant differences in the distribution of plant communities in the northern sand belt of Hulunbuir sandyland, showing a patch distribution, and soil nutrients have an important impact on the vegetation community pattern.

Key words: quantitative classification, Tsallis diversity profile, CCA ordination

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