Study Investigation On Application Of The Indigenous Tree Species Greenland Of Shijiazhuang Comprehensive Park

Park greening is the most frequent form in the people’s daily life, and is an important manifestation of economic, social development and spiritual civilization. The indigenous plant are an important part of urban landscaping, especially the indigenous tree species who have an important significance in designing ecological Landscape garden and human landscape garden cause of its advantage in Ecological Adaptability, price performance ratio, management, background of culture and embodiment of local plants’characteristics. Park is the city’s most important and most representative of Greenland, so the city needs to improve the image from the urban park landscape. People have advocated the indigenous plants shall be widely used in urban landscaping, and created local landscape, and reflect the unique style of urban and local characteristics.In order to solve the problems in the function of indigenous tree in urban greening and the application of indigenous tree in urban park, through the investigation of the status of indigenous tree in urban park this paper analyzed the species structure and plant landscape, set up an adaptability evaluation index system for indigenous tree species with Analytic Hierarchy Process(AHP),evaluated the adaptability of the indigenous tree in urban park, then summarized the problems in the applications of indigenous tree, and proposed solutions as well as a reasonable selection and planning of indigenous tree based on the greening status and culture of Shijiazhuang as references for road greening construction and ecological environment construction. The main findings were:(1) Species structure:the urban park in Shijiazhuang had indigenous plants of 107 species of 76 genera of 41 families, among the urban park green plants, species and quantity of indigenous plants accounted for 53.5%,75.7%, including 62 arbors,41 shrubs and 4 vines. The ratios of native species and exotic species, quantity, arbors species and shrubs species, evergreen trees and deciduous trees were 1:0.87,1:0.32,1:0.73,1:3.71. By analysis of the composition of indigenous tree species and genus that have been applied on the production showed that:Rosaceae, Leguminosae, Caprifoliaceae, Pinaceae and Oleaceaeaccounts for 48.8% in all the use of indigenous species production, and the maximum utilization of plants belongs to Rosaceae, accounting for 24.5%in all the use of native species, so plants of Rosaceae have an absolute advantage in the use of native species in urban park of Shijiazhuang.(2) About the species diversity of indigenous tree, the arbors with Species richness, Shannon-Wiener diversity index and Pielou evenness o greater than shrubs, but the Simpson dominantance was clean contrary. Results indicate that the indigenous arbors of application greater than shrubs in Shijiazhuang urban park. However, most shrubs whit application of frequency is greater than arbors.(3) Comprehensive evaluation:the adaptability of the indigenous tree in urban park of Shi jiazhuang consisted of appearance performance, stress resistance, growth performance and purification performance. The comprehensive evaluation maximum was Elaeagnus angustifolia, Diospyros kaki had best appearance performance index, Salix babylonica had best stress resistance index, Paulownia fortunei had best growth performance, Robinia pseudoacacia had best purification performance.(4) Analysis of landscape aesthetics:the overall landscape effect of green belts in Shijiazhuang urban park was prominent, but in lack of layering; the configuration lack of change; the colors match of plants were monotonous and lack of seasonal changes; the local characteristics and the local culture of urban was reflect not enough.(5)Problems in the application of indigenous plants in Shijiazhuang urban park:lack of diversity, vertical structure was momotone, application of frequency was lower, lower landscape aesthetic value.(6) The solutions to above problems were as follows:improved diversity and plant structure; strengthen frequency application, improved richness for plant community; enhanced the landscape aesthetic value, reflect the local characteristics.