Abstract:As one of the plant components of wetland park, the study of bryophyte community construction can provide important theoretical basis for wetland ecosystem management and biodiversity maintenance mechanism. Guiyang is rich in wetland and bryophyte resources. Based on three typical wetland parks in Guiyang, the species distribution of bryophytes and its relationship with environmental factors were studied. TWINSPAN analysis and canonical correspondence analysis (CCA) were used to quantitatively classify and rank the bryophytes community. The results showed that there were 17 families, 28 genera and 66 species of bryophytes in three typical wetland parks, among which Pottiaceae, Hypnaceae and Brachytheciaceae were dominant families. There was little difference in β diversity of bryophytes among the three wetland parks, with high species similarity and low richness. The habitats of bryophytes were mainly lithophyte and arboreal. The life forms were mainly interleaved and clustered. Bryophyte community could be divided into 13 types, all of which had their own characteristics, and their species composition and community characteristics could better reflect the relationship between the bryophyte type and environment factors. The habitats of the three wetland parks were similar. The results of CCA analysis showed that the primary environmental factor affecting the distribution of moss clusters in wetland park was altitude, followed by air humidity, canopy density, and light also had a certain effect. These provide a scientific basis for the conservation of bryophyte diversity in wetland park.
