Investigation And Analysis Of Landscape Plants In Qinzhou City Of Guangxi

This paper use the way of typical combined random sampling, selected42green different types of green space as the main research object, statistical analysis from the species, life form, application frequency characteristics, application situation that the landscape plant resources and so on in Qinzhou city; select and record83sample garden plant community. basing on community theory, statistical analysis of plant community characteristics, species important value, species richness index, diversity index, evenness index, and other the status of the city greenbelt plant community. According to the investigation and statistics, summarizes the application of landscape plants in Qinzhou City. At the end, summing up the characteristics and shortcomings, and put forward the corresponding suggestions according to the existing problem. The investigation and the analysis results are as follows:1、The results of investigation, Qinzhou city landscaping plant a total of292species, belonging to82families and197genera. Including ferns2families2genera and2species of gymnosperms;6families7genera8species,74families188genera and282species of angiosperms (including58families135genera and205species of dicotyledon,16families and53genera and77species of monocotyledon). 2、 Statistics the constitute of landscape plant in Qinzhou, results show that:(1) The statistical classification ccording to the of plant species source, there are114types of local Qinzhou native plant landscaping plant species, belonging to54families and88genera;178alien species, belonging to53families and129genera, including plant introduction and cultivation of66kinds of domestic (belonging to35families and47genera), foreign introduced cultivation106species (belonging to41families and89genera), naturalized plant6(belonging to3families and5genera).(2) The statistical classification according to type and characters of life of plants,152kinds of tree species (belonging to45families and100genera), accounting for52.1%in all kinds of landscape plants in Qinzhou; there are74plant species of shurbs (belonging to32families and50genera), accounting for25.3%in all kinds of landscape plants in Qinzhou;10species of vines (belonging to7families and9genera), accounting for3.4%in all kinds of landscape plants in Qinzhou;56species of grass (belonging to31families and51genera), accounting for19.2%in all kinds of landscape plants in Qinzhou.The statistical according landscape plant of evergreen and deciduous trees, garden plants in Qinzhou City, there are evergreen woody plants of190species (belonging to55families and119genera), accounting for65.1%in all kinds of. There are deciduous woody plants of46species (belonging to23families and39genera), accounting for15.7%in all kinds of. Evergreen woody dominant in green plants, the landscape of seasonal change is not obvious.(3)The classification statistics ccording to the ornamental characteristics of plant, Qinzhou city landscaping plant in the view position of145species (belonging to48families and99genera); flowering plants of103species (belonging to42families and75genera); fruit plant of22species (belonging to14families and20genera); foliage plants of92species (belonging to40families and65genera). There are65kinds of which has2or2categories above ornamental plants, including30species whose both view position and foliage plants.3、The investigation and statistics of plant communities in Qinzhou city, results show that:(1) Qinzhou city landscaping plant community Patrick index S ranged from3to19, the highest value of19. The Patrick S index higher (S≥10) have14community, accounting for16.9%of the total number of community. The plant park green space and road green community all have1community, residential communities greenbelt12. The Patrick S index in7～9plant communities in the36communities, accounting for43.3%of the total number of community.(2) Qinzhou city garden green space, Shannon-Wiener index (H1) to residential district green shrub layer to the maximum value, up to3.141; while the square green herb layer is the least, only0.853. Various types of green space in the shrub layer H’ value the most, followed by the arbor layer, the lowest is a herbaceous layer. In comparison with the same type of garden green space between different levels of H’, then the tree layer and shrub layer and herb layer is close, but the grass layer have large difference change.(3) Qinzhou city garden green space, Sinpson diversity index (D) in plant community residential green shrubs layer to the maximum value, up to0.955; while the square green herbaceous layer is minimum,0.441. Various types of Greenland community D value of shrub layer was the highest, followed by the arbor layer, the herb layer. The same type of green spaces with different levels of D value in different communities.(4) On the Pielou and index Jsw and Jsi evenness, plant community in Qinzhou city green land with tree layer uniformity is biggest, followed by the shrub layer, herb layer is the lowest. Jsw and Jsi in various types of green space between the present roughly consistent trend.