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Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (2): 207-214.DOI: 10.7522/j.issn.1000-694X.2021.00131

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Soil microbial diversity and its relationship with soil physicochemical properties in Urat natural Haloxylon ammodendron forest

Feng Chen1(), Jing Zhang2, Erniu Han1, Wensuyalatu3, Shenglin Li1, Guolin Wang3, Lei Wang4, Shaokun Wang5()   

  1. 1.Bureau of Urat National Nature Reserve in Bayan Nur City,Bayan Nur 015000,Inner Mongolia,China
    2.Master Station of Forestry and Grassland Protection in Inner Mongolia,Hohhot 010020,China
    3.Urat Rear Banner Station of Urat Haloxylon ammodendron and Equus hemionus National Nature Reserve,Bayan Nur 015000,Inner Mongolia,China
    4.Bayan Nur Wulashan Forestry Management and Protection Center,Bayan Nur 015000,Inner Mongolia,China
    5.Urat Desert-grassland Research Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2021-08-16 Revised:2021-10-19 Online:2022-03-20 Published:2022-03-30
  • Contact: Shaokun Wang

Abstract:

Haloxylon ammodendron is a widely used plant species for sand stabilization. It plays an important role in arid land development ecologically and economically. We chose natural H. ammodendron forest (Ha) to measure the soil microbial diversity and soil physicochemical properties, and analyze their relationships in Urat Rear Banner of Inner Mongolia. Bare sand (BS) was set as control. The results showed that both the soil bacterial and fungal diversities, including Shannon diversity index, Chao1 richness index and Phylogenetic diversity index were significantly higher in Ha than those in BS. Soil total carbon and nitrogen content were 1.73 and 2.21 times higher in Ha than those in BS. Soil silt and clay content was 2.6 times higher in Ha than that in BS. Soil water content was significantly lower in Ha than that in BS. H. ammodendron improved soil nutrients and soil texture, and consequently impact on soil microbial diversity. Soil bacterial and fungal diversities were positively correlated with soil total carbon and nitrogen contents, pH and electrical conductivity, while negatively correlated with soil C∶N, soil water content and fine sand content. Structural equation models (SEM) revealed that vegetation and soil pH directly influenced soil bacterial diversity. Soil fungal diversity was directly influenced by soil total carbon and soil water content, and indirectly influenced by vegetation.

Key words: Haloxylon ammodendron, microbial diversity, soil property, high throughout sequencing

CLC Number: