The Diversity and Composition of Soil Microbial Communities Differ in Three Land Use Types of the Sanjiang Plain, Northeastern China

  • 0Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, Key Laboratory of Microbiology, Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, School of Life Sciences, College of Heilongjiang Province, Heilongjiang University, Harbin 150080, China.

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Summary

This summary is machine-generated.

Human activities in Sanjiang Plain alter soil ecosystems. Cropland soil shows lower microbial diversity and abundance compared to forest and wetland, indicating significant impacts on soil health and function.

Area Of Science

  • Ecology
  • Environmental Science
  • Microbiology

Background

  • Sanjiang Plain faces ecological shifts due to intense human activities.
  • Soil microorganisms are sensitive indicators of soil quality and ecosystem health.

Purpose Of The Study

  • Investigate soil microbial community diversity and composition across forest, wetland, and cropland in Sanjiang Plain.
  • Identify key soil physicochemical properties influencing microbial communities under different land uses.

Main Methods

  • Phospholipid fatty acid (PLFA) analysis was employed to characterize soil microbial communities.
  • 114 different PLFA compounds were identified to assess microbial diversity and composition.

Main Results

  • Significant changes in soil physicochemical properties were observed across land use types (p < 0.05).
  • Cropland soils exhibited lower microbial diversity and abundance compared to forest and wetland soils.
  • Soil pH, water content, total organic carbon, and available nitrogen were primary drivers of microbial community structure.

Conclusions

  • Land use changes in Sanjiang Plain significantly impact soil microbial community structure.
  • Understanding these impacts provides a basis for sustainable land management and ecological restoration in the region.