Effects Of The New Countryside Construction On Synarthropic Plant Diversity

Based on the fields investigation, we selected3representative villages of the different construction level (that is medium, low, high) separately in the Yi pingyuan country, Tumen town, Jiade country, Dayang town, Tunli town, Jindian town and Yao miao town of the Yaodu district of Linfen city as the research sample, a systematic Study of the effects of the new countryside counstruction on species composition, similarity degree, the main plant relative coverage, relative height, and the important value and diversity of the synarthropic plant community.were studied by using quantitative ecology methodology, so that these results can be as theoretical basis for protection of the synarthropic plant and the original ecological environment. The results showed that:(1) With the enhancement of the construction of New Countryside, the number of the families, genera and species of the plant community reduced gradually, but the rate of decrease was also not obvious.The Jaccard similarity coefficient of synarthropic plant also show the same trend. This means that With the enhancement of the construction degree of New Countryside, The greater the impact of the species composition of the plant community.(2)58kinds of synarthropic plant within Study sample can be divided into:special-class, first-class secondclass, third-class, fourth-class, fifth-class, but also found in the investigation and analysis, Humulus scandens this special synarthropic plant, almost appears in every research plots, And the dominant position in prominent, Seems to have the trend of replaced other species gradually, Is a very worthy of attention plant, This paper divided it from the first-class synarthropic plant specially, for Cause all the attention of researchers. In addition, also found:Belong to the synarthropic plant of first three stages were are widely distributed plants in China and other parts of the world, for example, Chenopodium album, Setaira viridis, Digitaria sanguinalis and so on.(3) With the enhancement of the construction degree of New Countryside, The advantage position of a main dominant species is increasing, The status of the second dominant species and companion species decreased gradually and even disappeared; the total coverage of plant community reduced gradually, that is the area of vegetation cover decreased, While the bare land increased gradually,This illustrates:the construction of New Countryside have a certain effect on Species composition, the main advantage of a dominant position and the total coverage of species of the synarthropic plant.(4) The construction of New Countryside have a certain effect on the richness, diversity, dominance, evenness of species of plant communities of synarthropic plant, and the influence is relatively large(have significant or very significant effect), and the more close the degree of the construction of New Countryside, the more small difference between species diversity, vice versa.