Shifts in soil microbial diversity and greenhouse gas emission dynamics.

Soil bacterial diversity increases initially during land formation but stabilizes, while protistan diversity peaks after 7-9 years in reclaimed coastal soils.

• Why it matters: Understanding how land formation affects microbial communities and greenhouse gas emissions is crucial for developing sustainable land reclamation practices and mitigating climate impacts.
• What they did: Researchers collected soil samples over fifteen years from a reclaimed land area, analyzed microbial communities using high-throughput sequencing, and employed structural equation modeling to explore relationships between microbes and greenhouse gases.
• The result: Bacterial diversity influences CO2 emissions, and protistan diversity affects methane and nitrous oxide emissions, with soil moisture, nitrate, and organic carbon driving microbial shifts, suggesting strategies for emission mitigation.