Ecological Study Of Wetland Plant Community In Shanxi Province

The wetland flora,community classification and ordination, Species diversity of wetland in Shanxi Province are analyzed based on quadrat survey and previous studiesfrom 2012 to 2014. The purposes of this study were to compensate for the lack of existing research, to further improve the Shanxi provincewetland plant community data and the basic data, which will provide the necessary basic data for the protection and sustainable utilization of wetland plant resources in Shanxi province.The results obtained are as follows:1. There are 449 species of vascular plants of river wetland in Shanxi Province,which belong to 209 genera and 65 families.Among them there are about 8 families,8 genera,ll species in pteridophyta.57 families,201 genera,431 species in angiosperms,42 families,147 genera,295 species in dicotyledoneae and 15 families,54 genera,143 species in monocotyledoneae. In the composition of herbaceous plants in wetland vegetation is dominated by a total of 415 kinds,92.43% of the total number of species. Wetland plants are divided into 7 ecotypes,including 363 species wet plants,marking up 82.69% of the total species,which is the mian component of river plants in Shanxi.From the genera and species flora composition,the genera and species of temperate distribution types and mainly temperate distribution are respectively 107 genera and 216 species,Accounting for 51.19% of the total number of genera and 48.11% of the total of the species,This fully reflects the temperate flora nature of river wetland in Shanxi.Endemic genera,species scarcity,the personality traits of flora was not obvious.2. Using TWTNSPAN classification and DCA sorting method for community wetland plants in Shanxi a total of 575 plots were analyzed, the wetland plant community in Shanxi Province is divided into 14 association. DCA ordination diagram can reflect two environmental gradients, gradient and soil type andsoil moisture gradient. The horizontal axis represents the soil moisture gradient, soil moisture content increases from left to right in turn, plant community from left to right in turn for living community in wet, wet raw community, aquatic community; The vertical axis represents the soil type gradient, soil type from bottom to top were typicalswamp soil, meadow soil, salinization meadow soil, alluvial sandy meadow soil. Plots of DCA sorting and species of DCA sorting reflects the wetland plant communities and relations among them are consistent with the environment.3. The wetland vegetation associations of plant species in Shanxi province was studied with the diversity indices including species richness index (R), Simpson index (D), Shannon-wiener diversity (H’) and evenness index (E1), The results showed that,the average R was between 1 to 11, the average H’was between 0 to 1.6434,the trends of both two indices were similarity. The average E1 was between 0.2 to 0.9593,the larger and smaller for aquatic plant community, the rest of the community for the hygrophytes and hygro-mesophytes.