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| Characteristics and species diversity of Juglanscathayensis community in Guizhou |
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| DOI：10.16768/j.issn.1004-874X.2017.02.009 |
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| Abstract: |
| Field surveys were conducted on Juglans cathayensis community in Guizhou，by using methods
of routine investgation in the feature and diversity of community. The results showed the J. cathayensis community
consisted of 56 species in 56 genera，36 families. The vertical structure was very obvious，which can be
divided into canopy，shrub and herb layer，and J. cathayensis was the only dominant species of the canopy. The
appearances was determined mainly by the phanerophuta and hemicryptophyta plant. The important value of J.
cathayensis was 94.36 in canopy layer，which was dominant position，the second was Cornus macrophylla，those
important value was 77.51，the third was Chimonobambusa quadrangulari，its important value was 77.51. The
radial structure showed a discontinuous distribution，which was concentrated in the small diameter class，it was
a stable population. The species diversity of this community was relatively low，the species diversity was 36，
the Shannon Wiener index was 3.356，the Simpson index was 1.263，the Pielous index was 0.364. The Shannon-
Wiener and Pielous index of herb were 3.145，0.513，which were the largest，the most abundant species and
diversity appeared in herb layer. |
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