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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (2): 417-423.doi: 10.13287/j.1001-9332.202002.027

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Variation characteristics of soil seed bank during vegetation restoration in red soil erosion area

WANG Chang-hui, LIU Qing-qing, WEN Zhu-mei, WANG Zi-rui, CHEN Yan-fang, LIU Bo, WANG Zheng-ning*   

  1. College of Forestry, Fujian Agriculture and Forestry University/Cross-Strait Collaborative Innovation Center of Soil and Water Conservation, Fuzhou 350002, China
  • Received:2019-09-10 Online:2020-02-15 Published:2020-02-15
  • Contact: * E-mail: wangzn@fafu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31670714)

Abstract: As a natural disturbance agent, soil erosion could affect secondary distribution and species composition of soil seed bank. The composition, storage and distribution pattern of the soil seed banks in five different vegetation recovery areas, including bare ground (Ⅰ), pine forest land (Ⅱ-Ⅳ) and secondary forest (Ⅴ) in the typical red soil erosion area, were studied to explore the effects of soil erosion on soil seed bank during vegetation restoration. The results showed that a total of 21 species were recorded in the soil seed bank. Species richness was low, and dominated by herbaceous species. The density of soil seed bank varied from 56.7 to 793.3 seeds·m-2 and differed significantly among the sampling plots. Further, the density of soil seed bank decreased obviously with the increasing soil erosion intensity. The seed bank density of 0-2 cm soil layer increased along uphill, middle slope, and downhill. The soil seed banks of severely eroded and strongly eroded plots were mainly distributed in the 5-10 cm soil layer, with almost no seeds in 0-2 cm soil layer on the middle slope and uphill. Soil erosion made the distribution of soil seed bank to deeper soil layer, the accumulation of which will need a long time after vegetation restoration.