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- W2358460050 abstract "The wetlands in desert oasis play an important role in the development of the oasis and the biodiversity in arid region. Based on the field investigation of community composition in the wetlands in desert oasis,the type of plant communities, the spatial distribution characteristics and its influence factors, as well as the characteristics of species diversity were analyzed in the middle reaches of the Heihe River using the two-way indicative species analysis(TWINSPAN) and detrended correspondence analysis(DCA). The results showed that 40 higher plant species were observed, which are affiliated with 18 families and 38 genuses in the wetlands in desert oasis in Linze, Gansu province. The vegetation was classified into 3 types and 11 associations.The first vegetation type was halophytic marsh vegetation, which mainly consisted of halophyte and hygric species and its representative association was Carex karoi, Juncus articulatus, and Phragmites australis. The second type was salty meadow vegetation, which mainly contained mesophytic species and its representative association was Leymus secalinus, Suaeda glauca, and Oxytropis glabra. The third vegetation type was grassland vegetation, which mainly contained mesophytes and xerophytes and its representative association was Sophora alopecuroides. Species richness index in the ecotone was the biggest and was the smallest in the xerophytic plant zone. Species diversity index and evenness index had the same trends as the richness index. However, the simpson index showed the opposite trends. The soil environment factors showed that the soil water content, nutrition content and total salt content were the main impact factors on the plant species distribution pattern. There were the biggest contributions in the soil water content and total salt content, which were the key factors on the succession of plant communities in the wetlands. Besides, the soil surface water content and total salt content were also the main environment factors influencing the species richness. The soil water content was the key factors on the community dominance, and the total nitrogen content was the important factors on the community evenness." @default.
- W2358460050 created "2016-06-24" @default.
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- W2358460050 date "2014-01-01" @default.
- W2358460050 modified "2023-09-23" @default.
- W2358460050 title "The Ecological Series and Species Diversity of Plants in Wetlands in Desert Oasis in Linze" @default.
- W2358460050 hasPublicationYear "2014" @default.
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