The characteristic of species diversity and habitat evaluation in rare yew community in the west of the Qinglin mountain

doi:10.14088/j.cnki.issn0439-8114.2019.06.020

Abstract

Abstract: The biodiversity and habitat of Taxus chinensis forest, a rare species, were evaluated in Xiaolongshan National Nature Reserve in the western part of Qinling mountains, the results showed that the mean value of richness index was 7.25, and diversity index average value was 0.58, evenness index average value was 0.29, in tree layer of Taxus chinensis communities. The order of diversity index was shrub layer>herbaceous layer>arbor layer. The change of tree species richness index, species diversity index and evenness index, in Taxus chinensis communities, which were all presented obvious single apex with the increasing elevation. However, for species dominance, it was showed that the J type growth trend with altitude. The relationship among species richness index,diversity index,evenness index and species dominance with forest age suggested similar to elevation. The species diversity index, species richness index and evenness index were significantly correlated with soil fertility indices, especially total nitrogen, available nitrogen, and organic matter. The change of species dominance was quite the contrary. The living environment of Taxus chinensis communities is good, and habitat is in clean levels in general, meanwhile, diversity of species quite rich, and living conditions is better.

Key words: diversity of species, taxus chinensis community, threshold value evaluation of diversity, Shannon-wiener diversity index evaluation, national nature reserve of Xiaolong mountains, west of the Qinglin mountain

CLC Number:

S791.241.8

PEI Jie, JU Tian-zhen, LIU Wen-zhen, MOU Rui-qiang, ZHANG Guo-qiang, MA Jian-wei. The characteristic of species diversity and habitat evaluation in rare yew community in the west of the Qinglin mountain[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(6): 92-96.

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