[1]YANG Zeliang,REN Jianhang,KUANG Yuanyuan,et al.Dynamics of Soil Microbial Communities Along Vegetation Restoration Gradient in Karst Area[J].Research of Soil and Water Conservation,2019,26(03):185-191.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 03
Page number:
185-191
Column:
Public date:
2019-04-12
- Title:
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Dynamics of Soil Microbial Communities Along Vegetation Restoration Gradient in Karst Area
- Author(s):
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YANG Zeliang1, REN Jianhang1, KUANG Yuanyuan1, LI Pingfang1, XIANG Guohong1, XUE Tao2
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1. College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China;
2. College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
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- Keywords:
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karst area; vegetation restoration; soil microbial communities; soil nutrients
- CLC:
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X171
- DOI:
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- Abstract:
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We presented a comprehensive analysis of soil microbial communities and soil nutrients along a vegetation restoration gradient in a karst area, and explored the relationship between soil microbial communities and soil nutrients. The findings are as followings. (1) Vegetation restoration had strong effect on soil nutrients(p<0.05), soil nutrients gradually decreased in the order of primeval forest > secondary forest > shrubland > grassland, while soil pH and soil bulk density gradually decreased. (2) Soil microbial biomass carbon, nitrogen and phosphorus decreased in the order:primeval forest > secondary forest > shrubland > grassland, and there was no significantly difference between secondary forest and shrubland. MBC/MBN gradually decreased and BC/MBP, MBN/MBP gradually increased with the vegetation restoration development. (3) There was a large number of bacteria in different vegetation restoration, and the number of the total soil microbes, bacteria and fungi decreased in the sequence:primeval forest > secondary forestland > shrubland > grassland. (4) Vegetation restoration had strong effect on soil microbial communities, species richness index (H), evenness index (E) and carbon source utilization richness index (S) decreased in the order:primeval forest > secondary forest > shrubland > grassland, while dominance index (Ds) showed the opposite change trend with no significant difference (p>0.05). (5) Correlation analysis showed that soil nutrient, soil microorganism quantity and soil microorganism quantity were significantly related to soil microbial diversity, and soil microbial biomass had the important contribution to soil microbial diversity, while MBN, SOC and the number of bacteria can be regard as the main driving factors on the pattern of soil microbial community in a karst area.