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›› 2013, Vol. 49 ›› Issue (5): 30-35.doi: 10.11707/j.1001-7488.20130505

• 论文 • Previous Articles     Next Articles

Species Diversity and Environmental Interpretation of Typical Vegetation Types in the Shennongjia Natural Reserve

Cong Jing1,2, Yin Huaqun1, Lu Hui2,3, Su Xiujiang4, Yang Jingyuan5, Li Diqiang2, Zhang Yuguang2   

  1. 1. School of Mineral Processing and Bioengineering, Central South University Changsha 410083;2. Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Beijing 100091;3. Qinghai Normal University Xining 810008;4. Administrative Bureau of Baiyunshan National Nature Reserve Baojing 416500;5. Administrative Bureau of Shennongjia National Nature Reserve Shennongjia 442421
  • Received:2012-09-18 Revised:2013-03-25 Online:2013-05-25 Published:2013-05-25

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Abstract: This paper studied four typical vegetation types, subalpine bush (Ⅰ), subalpine coniferous forest (Ⅱ), mixed coniferous and deciduous forest (Ⅲ), and the deciduous broadleaved forest(Ⅳ)in Hubei Shennongjia National Nature Reserve. We explored the relationship between plant diversity and environment factors, and revealed the change pattern of plant community species diversity in the typical vegetation. Furthermore, the main environmental factors influencing species distribution pattern were discussed. In this study, we set up 53 plant sample plots to survey the plant diversity. The investigation of forest communities was conducted by using the detrended correspondence analysis (DCA) for ordination in Hubei Shennongjia National Nature Reserve. Two-dimensional ordination diagram of CCA was presented in combination with community species matrix and environmental factors matrix. The results showed that species richness and flora differentiation degree, Shannon-Wiener diversity index and E.Pielou evenness index all exhibited "the single-peak" distribution pattern with rising altitude. The species richness and diversity were the highest in the middle altitude. The first ordination of DCA shaft analysis expressed that the distribution pattern was to a large extent influenced by the altitude gradient. CCA covariable matix corresponding analysis indicated that soil and terrain factors in general were able to explain 53.35% of plant diversity variation pattern. The first ordination of CCA had a significant positive correlation with soil temperature (the correlation level is 0.936), while it had a significant negative correlation with soil organic carbon and total nitrogen (the correlation level is －0.714 and －0.752, respectively). The second order axis was associated with soil pH (the correlation level is －0.775). The results revealed that these factors had a dominating impact on plant diversity distribution pattern.

Key words: species diversity, DCA ordination, CCA ordination, environmental interpretation, Shennongjia Natural Reserve

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