Biodiversity Science ›› 2011, Vol. 19 ›› Issue (2): 190-196.doi: 10.3724/SP.J.1003.2011.07030

Special Issue: Forest Biodiversity

• Special Issue • Previous Article     Next Article

Variation in phylogenetic structure of forest communities along a human disturbance gradient in Gutianshan forest, China

Kai Song1, 2, Xiangcheng Mi1*, Qi Jia1, 3, Haibao Ren1, Dan Bebber4, Keping Ma1   

  1. 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

    2Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

    3College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China

    4Earthwatch Institute, Mayfield House, 256 Banbury Road, Oxford, OX2 7DE, United Kingdom
  • Received:2011-02-22 Revised:2011-03-04 Online:2011-06-01
  • Xiangcheng Mi E-mail:mixiangcheng@ibcas.ac.cn
  • Supported by:

    Quantify and monitor carbon pools and fluxes to assess the impact of climate change on subtropical forests under different anthropogenic disturbances.

Community phylogenetic structure contains information about evolutionary relationships among coexisting species in a community. Studies on community phylogenetic structure provide new insights into ecological processes and the mechanisms underlying community restoration. We compared the phylogenetic structure of forest communities along a human disturbance gradient using data from 12 1-ha plots in secondary forests within the Gutianshan National Nature Reserve, Zhejiang Province, China. We found that, at the 20 m×20 m scale, the plantation forest community (I) was phylogenetically overdispersed. Forest communities II (naturally-restored forest 50 years after clear cutting and 20 years after heavy selective cutting), III (naturally-restored forest 50 years after clear cutting), and IV (old-growth forest) were phylogenetically clustered. Forest types II and IV were the most clustered. We also conducted the same analyses for four forest types grouped into different DBH classes, and found that forests II, III, IV with DBH less than 5 cm and 5–10 cm were phylogenetically clustered, but forest I was overdispersed. In contrast, all the forests with DBH more than 10 cm were phylogenetically overdispersed except the forest IV. Our results suggest that seed dispersal is the main process resulting in phylogenetic overdispersion at early stage of succession, and habitat filtering is main process leading to phylogenetic clustering when habitat heterogeneity increases during succession. Possibly as a result of habitat filtering, forest IV was always phylogenetically clustered regardless of which size class was examined.

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