Research On Bryophyte Community Characteristics And Landscape Suitability Evaluation In Mountain Parks

Mountain park is a special green space in mountain city,and its bryophyte landscape is an organic part of urban landscape.The landscape value and ecological value determine that bryophyte plays an important role in improving and repairing urban ecological environment.In order to make bryophytes play an important role in landscaping construction,ecological restoration and landscape construction of urban parks,in this paper,the community ecology and landscape suitability of bryophytes and landscape in the representative mountain parks of Guiyang were studied.The results are as follows:(1)There are 44 species of bryophytes in Guiyang Mountain Park,belonging to24 genera and 16 families.Musci are 41 species of mosses,22 genera and 14 families,Accounting for 93.18% of the total species;3 species,2 genera and 2 families of liverworts,accounting for 6.82% of total species.There are 8 dominant species in the park,respectively Isopterygium serrulatum ? Eurhynchium laxirete ? Hyophila propagulifera?Brachythecium pendulum?Haplocladium angustifolium?Plagiomnium maximoviczii?Claopodium rugulosifolium?Brachythecium noguchii?(2)The diversity index and evenness index of bryophyte community in mountain parks ranged from 0.580 to 1.891 and 0.641 to 0.997.The order of diversity was indigenous bryophyte > lithogenic bryophyte > arboreal bryophyte,Park diversity size ranking for the Huaxi Park > Qianxingshan Park > Guanshan Lake Park.Among the bryophyte communities of different landscape types,the similarity of bryophyte species of roadside lithophyte and open field lithophyte was the highest(0.824),with a total number of 18 species.As a whole,the mountain parks in Guiyang are rich in bryophyte species with high diversity.(3)A total of 30 sample plots with the highest diversity values among landscape types in mountain parks were selected for canonical correspondence analysis.The results showed that the environmental factors affecting the growth of bryophytes were canopy density,humidity,human disturbance and substrate.The results show that Brachythecium piligerum ? B.rotaeanum and B.garovaglioides grow well in wet conditions,Palamocladium euchloron ? Thuidium pristocalyx r ? Heteroscyphus zollingeri ? B.rutabulum strong anti-interference ability;Claopodium rugulosifolium and Bryum tuberosum love light,drought tolerance;Bryophytes Dumortiera hirsuta?Pseudotaxiphyllum densum and Rhynchostegiella japonica were significantly affected by substrate.Mosses Fissidens flaccidus?Didymodon vinealis and Fabronia rostrata showed weak anti-jamming ability.(4)The bryophytes in mountain parks are composed of 6 life forms:Turf?Weft?Mat ? Tail ? Pendant ? and Slanting.The main colors of bryophytes are yellow,yellow-green and green,and the typical colors are yellow and yellow-green,The morphology is mainly of prostrate type or a mixture of upright and prostrate type,The texture is stiff,soft,soft and shiny.(5)The evaluation system of bryophyte landscape suitability was established,and the principal component analysis was used to evaluate the landscape suitability of 90 samples.The results showed that 43 plots were within the suitable range,accounting for 47.78% of the total,and 47 plots were unsuitable,accounting for 48.89%.The landscape suitability of lithophytic community and soil community types is better,but the landscape suitability of tree community types needs to be strengthened.In addition,interwoven bryophytes distributed in all the bryophyte plots and had obvious advantages,and the combination types of 'Weft' and 'Weft+Turf' had the best landscape suitability.(6)Based on the survey and evaluation results of bryophytes in mountain parks,the problems of bryophyte landscape in mountain parks were summarized,and four suggestions were put forward to help the protection of bryophytes in natural habitats and provide basis for the construction of bryophyte landscape in the later stage.