Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area

LI Fang; WANG Zhihui

doi:10.11932/karst20190209

Volume 38 Issue 2

Apr. 2019

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LI Fang, WANG Zhihui. Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area[J]. CARSOLOGICA SINICA, 2019, 38(2): 243-251. doi: 10.11932/karst20190209

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LI Fang, WANG Zhihui. Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area[J]. CARSOLOGICA SINICA, 2019, 38(2): 243-251. doi: 10.11932/karst20190209

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Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area

doi: 10.11932/karst20190209

School of Life Sciences, Guizhou Normal University, Guiyang,Guizhou 550025,China

Publish Date: 2019-04-25

Abstract

Abstract

In order to explore the ecological distribution of Arthrodontae mosses in karst peak-cluster area and their environmental influencing factors, three typical karst peak-clusters with different vegetation coverage in Siya river basin of Guiyang were selected for the research, where each peak-cluster was divided into lower slope, middle slope and upper slope according to relative height difference. The mosses were collected by the S-shape sampling method, and they were classified by the peristome teeth types of mosses. The Summed Dominance Ratio(SDR), Sorenson similarity index and RDA were used to analyse the ecological distribution on Arthrodontae and the effect of environmental factors. The results show that 74 species from 26 genera in 11 families were identified in the three karst peak-clusters, including 26 species of acrocarpi-haplolepideae mosses (SDR:97.73%), 21 species of acrocarpi-diplolepideae mosses (SDR:53.35%) and 27 species of pleurocarpi-diplolepideae mosses (SDR:93.01%). The No.1 peak-cluster is dominated by the pleurocarpi-diplolepideae mosses with their SDR value of 100%, while the No.2 and No.3 peak-clusters are dominated by acrocarpi-haplolepideae mosses, and their SDR are 81.80% and 69.75%, respectively. The pleurocarpi-diplolepideae mosses mainly distribute at the bottom of the karst peak-cluster, with SDR of 97.06%, and the middle and top of the peak-cluster is dominated by theacrocarpi-haplolepideae mosses, with SDR of 86.23% and 90.76%, respectively. Furthermore, Sorenson similarity analysis shows that the similarity coefficient of the species of the acrocarpi-haplolepideae mosses is the highest in the middle and top of the peak-cluster, of which the Sorenson similarity is 27.91%; and that of pleurocarpi-diplolepideae mosses in the middle and top of the peak-cluster is the lowest, which is 11.63%. The RDA analysis shows that the distribution of the acrocarpi-haplolepideae mosses is mainly influenced by light intensity and environmental temperature. The extension of the pleurocarpi-diplolepideae mosses is mainly influenced by the relative humidity; while the distribution of the acrocarpi-diplolepideae mosses is mainly affected by the altitude.
- Arthrodontae mosses,
- ecological distribution,
- environmental factors,
- karst peak-clusters

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Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area

doi: 10.11932/karst20190209

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Study on ecological distribution of Arthrodontae mosses and their environmental factors in karst peak-cluster area

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