Chin J Plant Ecol ›› 2023, Vol. 47 ›› Issue (9): 1278-1286.DOI: 10.17521/cjpe.2023.0052

Special Issue: 红树林及红树植物

• Research Articles • Previous Articles     Next Articles

Seedling quantitative characteristics and dynamics of Syzygium hancei populations in Guangxi, China

WANG Yan-Ling1, ZHAO Li-Jun1,2,*(), ZHU Li-Qiong1, MO Ruo-Guo1, LIN Ting1, ZHAO Xiao-Yu1   

  1. 1College of Forestry, Guangxi University, Nanning 530004, China
    2Guangxi Key Laboratory of Forest Ecology and Conservation, Nanning 530004, China
  • Received:2023-02-21 Accepted:2023-04-26 Online:2023-09-20 Published:2023-09-28
  • Contact: * ZHAO Li-Jun(
  • About author:** Current workplace: Guangxi Vocational University of Agriculture, Nanning 530009, China
  • Supported by:
    National Natural Science Foundation of China(31260093);National Natural Science Foundation of China(31560061);Natural Science Foundation of Guangxi(2013GXNSFAA019057)


Aims Syzygium hancei is the dominant species in the seasonal rainforests of the coastal zone of Guangxi. It plays an important role in restoration of the coastal ecological environment. Hence, investigating the population dynamics of natural S. hancei populations in Guangxi is of significant importance.
Methods In this study we monitored seedlings of S. hancei populations in three distinct communities (A, B and C) in Fangchenggang City over a period of two-years. Data on seedling survival rates were collected, and dynamic life tables were established. Survival curves, mortality curves, and survival function curves were constructed and analyzed.
Important findings Our results showed that: (1) The survival curves of populations A and C exhibited Deevey-II type characteristics, whereas the curve for population B displayed Deevey-III type characteristics. The mortality curves experienced substantial fluctuations during the early stage, but eventually stabilized, oscillating between 0.2 and 0.4 in the later stage. (2) Survival analysis demonstrated that the survival rates of populations A, B, and C followed an initial increase followed by a decrease. The cumulative mortality rate in the later period consistently exceeded the survival rate. Survival function fluctuations of population B were more stable compared to populations A and C. (3) The comprehensive analysis showed that all the natural regeneration capacities of those three S. hancei populations were low, with population B exhibiting the most stable capacity. The low natural regeneration capacity can be attributed to a limited germination base, high mortality rate of seedlings, and insufficient light, resulting in fewer seedlings progressing to the subsequent growth stage.

Key words: Syzygium hancei, population, seedling, dynamic life table, survival curve, survival analysis, natural regeneration capacity