The Research Of Residential Plant Diversity Characteristics In Taiyuan City

Biodiversity is life on earth hundreds of millions, billions of years of accumulation, precipitation, and the result of evolution, for life on earth provides a variety of resources, the stability of the biological diversity as well as provides a natural environment to the survival of the earth. Global rapid urbanization on the biological environment and biodiversity is the effect that cannot be ignored.As to speed up the urbanization and the rapid construction of human, urban biodiversity is facing sharply reduced risk, but also affect the stability and development of the urban ecological environment. Because the city the decay of the natural environment, the interference of man-made factors, results in the decrease of urban plant diversity, natural wild species all but disappear. Within the city plant is given priority to with introduction, artificial cultivation. Combined with all kinds of factors such as natural disasters, invasive species, urban plant survival space more narrow, facing the threat of more big.Residential green space as one of the important part of urban green space, its plant diversity to a great extent, affects the city ecological environment. This research in the prophase and the quadrat investigation data collected on the basis of classification of taiyuan city residential area sampling, field investigation of taiyuan 15 residential area of the plant diversity and its related content, four of index of plant diversity and species are calculated respectively. Analysis of Patrick index, species importance value index, Shannon-Wiener index and Pielou index. Through the sample area residential area as a whole and classification of the parameters of the statistics, analysis, and the results are as follows:(1) Residential green space of taiyuan city from this study contains a total of 142 plant species, the ratio of plant species, arbor, shrub, herb:vine for will.3:6:1.(2) Survey sample of plant species in green space of residential areas mainly concentrated on some common species of trees in the using frequency and importance value is the highest pagoda tree, its frequency is 73.3%, followed by cedar, jujube tree, the tree of heaven, prunus persica, Chinese pagoda tree, Chinese prickly ash, etc. In 40 kinds of shrubs, using the high frequency of clove, Chinese rose to 66.7%, the second is jiaodong euonymus frequency was 60%,53.3% flowering plum, forsythia, and gold leaf privet frequency is 46.7%, it can be seen in the application of plant species has certain limitation, less certain or several plants of the high frequency application constitutes the tone of residential green space plant landscape. But from the application frequency difference size of tree species can response the dominant tree species.(3) Through the residential sample classification comparison according to the construction period, there are three results. First, the diversity levels associated with construction s, new residential area level of plant diversity and species richness is significantly higher than the old residential areas; Second, in different periods, but species evenness changed little; Third, different times have different focus on residential area in the greening, reflect the different emphasis on the design of residential area greening. Four times more residential area as a whole tree species, and for the choice of tree species are more valued.Social economic activities by species selection and dispersed directly affect the urban plant diversity, so in this study, the social and economic factors listed separately, analyze its influence to urban residential green space plant diversity.The content can be objectively present statistical data, and the relationship between plant diversity is more direct and predictability. To social and economic factors, affecting the diversity in all sorts of problems based on reality, that may affect the various factors of taiyuan city residential area plant diversity, diversity and the factor analysis in SPSS software, the correlation between researching results are as follows:Species richness S has an associated factors associated with policy requirements, afforestation, developers planning design professional, quality of residential area, there are significant correlation is average price, no significant correlation factor is volume rate;And species evenness J has an associated factors associated with diversity, policy requirements, the developers professional planning and design, the quality of residential area, there are significant correlation factor is covered, there was no significant correlation factor is volume rate and the average price;And diversity index H'has an associated factors associated with policy requirements, developers planning and design professional green area, residential quality, there are significant correlation factor, plot ratio and average price.