Chin J Plan Ecolo ›› 2018, Vol. 42 ›› Issue (9): 938-945.DOI: 10.17521/cjpe.2018.0055

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Community characteristics and population structure of Ferrocalamus strictus, a rare species in Mojiang, Yunnan, China

YU Ding-Xiang,DU Fan(),SHI Ming,YANG Cong,DAI Jun   

  1. College of Forestry, Southwest Forestry University, Kunming 650224, China
  • Received:2018-03-07 Revised:2018-09-10 Online:2018-09-20 Published:2018-09-26
  • Contact: Fan DU


Aims As an endangered wild species with extremely small populations, Ferrocalamus strictusis narrowly distributed in South Yunnan with a small number of individuals. The survey of population structure and community characteristics of the wild population of F. strictus can facilitate understanding its endangered system and mechanisms and provide preliminary research basis for its protection.

Methods We investigated the community and population structure of F. strictus, including species composition, population density, population survivorship curve and death factors by plot surveying and sampling.

Important findings The community in which population of F. strictus is located in Mojiang has some characteristics of mountain rainforests in terms of appearance and species composition. The population density of F. strictus was 2.04 ind.·m -2. The survivorship curve of F. strictus was between Deevey-I and Deevey-II. The net proliferation rate (R0) of F. strictus population was 1.10, which indicates an expanding population of F. strictus. The death of F. strictusis caused by human logging, natural death, shoot degradation and insects feeding. Among them, artificial cutting accounts for the largest proportion. Ferrocalamus strictus is a species of forest bamboos distributed in the South Asian subtropics, which is a medium-sized bamboo species. Its internode length change suddenly from the base 3-4 nodes. The longest ones exceed 1 m, which ranks at the top of all bamboo species and is closely related to its adaptation to the tropical mountain rainforest environment.

Key words: Ferrocalamus strictus, species composition, population size, internode characteristic, Mojiang