Study On Investigation Of Wild Ornamental Of Jiangsu Dayang Mountain National Forest Park

Investigation of wild ornamental plant resources is an important topic of the application research on garden plants. Reasonable study and exploitation of wild ornamental plants is conducive to riching botanical garden plant resources and promoting the sustainable development of gardens. Dayang mountain national forest park as the research object in this paper. Investigated of its wild ornamental plant resources, analyzed of its resources,studied of its resources exploitation and community optimization,etc. The main results were as follows:The plant resourcesn of Dayang mountain is rich. Souted out there are 128 families, 343 genera and 586 species(including wild and cultivated species) by field investigation and refer to the relevant information for the first time. In accordance with the standards of wild ornamental plants,there are 105 families, 287 genera and 438 species of wild and semi-wild ornamental plants. Among them 224 species are woody plants, 214 species are herbaceous plants. Analyzed and discussed in detail from the perspectives of ornamental type, life form, applied, etc.For rational exploitation of wild ornamental plants,a preferential exploitation evaluation model had been established,which had eight coefficients of Ornamental value coefficient,Resistance coefficient, Habitat adaptability coefficient, Breeding difficulty coefficient, Contain coefficient, Introduction importance coefficient, Distribution coefficient,Endangered coefficient, by using the analytic hierarchy process(ahp) combined with clustering analysis method.Prioritized the exploitation sequence of 193 species(86 species of woody plants, herbaceous plants 107 species) of wild ornamental plants which were the second filtrated. It was concluded that the first preferential exploitation included 22 species of woody plants, 16 species of herbs.Combined with field condition of Dayang mountain, setted 40 quadrat of the size of 20×20m2.Classified it into Cunninghamia lanceolata plant communities,Pinus elliottii plant communities,Pinus taeda plant communities,Quereus variabilis plant communities,Broad-leaved mixed forest plant communities, Shrub mixed forest plant communities and planted forest plant communities,and studied the communities of quantitative properties and species diversity,which provided data reference for the optimization of Dayang mountain wild community.On the basis of the analysis data of Dayang mountain wild community, uesd the wild plant resources and simulated the natural community, putted forward 14 kinds of close to the natural plant configuration model which to improve the overall effect of landscape of Dayang mountain,and provide reference for the city landscape close to the natural plant configuration of the Suzhou and similar areas.