Change of Soil Bacteria Diversity between Desertification and Restoration
Journal Title: IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) - Year 2017, Vol 12, Issue 1
Abstract
The control of desertification has focused for centuries on plants and animals; microbial profiles are largely unknown. We collected soil samples from the aeoliansandy land (SL), sandy grassland (SG), and restored sandy land (RS), respectively. Diversity indexes were determined based on 16S rDNA sequencing. Results show that SL is of the highest species diversity and richness as deduced from Shannon index(SL>RS>SG)and Menhinick index (SL>RS>SG), while the microbial distribution is most homogeneous in RS and most inhomogeneous in SG as deduced from Evenness index (RS>SL>SG). Acidobacteria, Proteobacteria, Actinobacteriaand Firmicuteswere among the highly abundant taxonomic groups present across the three sample sites and were designated as the core phyla. Acidobacteriawere dominant in SG(49.8%) and RS (32.4%), while Actinobacteria (23.9%) and Firmicutes (22.6%) were dominant in SL. Although the overall microbial composition was more similar between SG and RS, there are more common genus shared by SL and RS. Besides, compared with SL, only Acidobacteriaand Proteobacteriaincreased, Firmicutesand Actinobacteriadecreased greatly in SG and RS. We try to explain the microorganisms’ function in the progress of desertification and restoration, and to provide a theoretical basis for the recovery of aeolian sandy land.
Authors and Affiliations
Feijie Li1,2,, Haiyan Jia1, Yan Wang1,2, Hui Tang1, 2,Liping Zhang
Keywords
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- EP ID EP388358
- DOI 10.9790/3008-1201047487
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