Evaluation And Application Of Wild Ornamental Plants In Zhujia Mountain Nature Reserve In Guizhou

Wild ornamental plants are a kind of excellent plant germplasm resources with high ornamental value,good ecological adaptability and great development prospects.At present,the application frequency and proportion of common ornamental plants in urban landscaping in many areas of China are high,which leads to serious homogenization of urban landscape plants and lack of local characteristics.Zhujiashan Nature Reserve in Guizhou Province is rich in wild ornamental plant resources,most of which have high ornamental value,good adaptability and stress resistance,and can be developed and utilized in a variety of species.In this study,the wild ornamental plant resources in Zhujiashan nature reserve of Guizhou Province were investigated on the spot,the species,composition,flora and ornamental characteristics of wild ornamental plant resources were collected and analyzed,the evaluation system of wild ornamental plant was constructed,the qualitative and quantitative methods were used to evaluate,the excellent wild ornamental plant species were screened,and the landscape application was analyzed,In order to provide basic reference for the protection and research of wild ornamental plant resources and the development and utilization of landscape plants in Zhujiashan nature reserve.The main results are as follows:(1)Based on the field investigation and statistics of wild ornamental plants in Zhujiashan nature reserve,698 species of wild ornamental plants belonging to 392 genera and 141 families were found,including 8 species of gymnosperms belonging to 6 genera and 6 families,631 species of dicotyledons belonging to 341 genera and 122 families,and 59 species of monocotyledons belonging to 45 genera and 13 families.There are 47 families,53 families,19 families,and 22 families in single species family,2-5 families,6-9 families,and more than 10 families;257 genera,119 genera,14 genera,and 3 genera in a single species-genus,2-5 genera,6-9genera,and more than 10 genera.The dominant families are 22 families and the dominant genera are 25 genera.(2)Based on the analysis of the geographical distribution of families and genera of wild ornamental plants in Zhujiashan nature reserve,it found that the geographical distribution of families and genera in the reserve can be divided into 10 distribution areas,15 distribution area variants,and 14 distribution areas and 17 distribution area variants.The distribution patterns of families and genera in the reserve panned subtropical,which are 29 families and 59 genera,showing a strong tropical subtropical floristic nature,and mixed with north temperate elements.(3)Among the growth types of wild ornamental plants in Zhujiashan nature reserve,221 species are arbor growth type and 206 species are shrub growth type,while 60 species are herb growth type and 5 species are bamboo growth type.Among the ornamental diversity of wild ornamental plants in the nature reserve,there are 529 species of foliage plants,302 species of flower plants,131 species of shape plants,and 87 species of branch plants.(4)In the constraint layer of the wild ornamental plant evaluation system,ecological habit(0.4742)was the main limiting factor,followed by ornamental characteristics(0.3764)and resource potential(0.1494).In the standard layer corresponding to ornamental characteristics,the display degree of ornamental(0.0801)was the main influencing factor;the stress resistance(0.1397)was the main influencing factor of biological habits,and the regeneration ability(0.0427)was the main influencing factor of resource potential.(5)Through the comprehensive evaluation and classification of 698 kinds of wild ornamental plants in Zhujiashan nature reserve,175 species of class I wild ornamental plants,310 class II wild ornamental plants,122 class III wild ornamental plants,and 91 class IV wild ornamental plants selected.(6)Based on the analysis of the use forms of wild ornamental plants in Zhujiashan nature reserve,it found that there are 222 species of wild ornamental plants in the reserve,followed by 153 species of hedgerow and green sculpture,135 species of court shade,105 species of unique ornamental plants and flowers,88 species of forest,81 species of roadside trees,65 species of stake scenery and 32 species of protection.