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Impact of drought on soil microbial biomass and extracellular enzyme activity

Frontiers in Plant Science 2023 56 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Qing Qu, Quan Gan, Quan Gan, Quan Gan, Zhen Wang, Quan Gan, Quan Gan, Quan Gan, Quan Gan, Rentao Liu, Hongwei Xu

Summary

This meta-analysis examined the impact of drought on soil microbial biomass and enzyme activity at a global scale. Researchers found that drought significantly reduced microbial biomass carbon, nitrogen, and phosphorus by over 20%, with the severity of effects linked to drought intensity, duration, and mean annual temperature.

Our results showed that drought significantly decreased the MBC, MBN, and MBP and the activity levels of BG and AP by 22.7%, 21.2%, 21.6%, 26.8%, and 16.1%, respectively. In terms of vegetation type, drought mainly affected the MBC and MBN in croplands and grasslands. Furthermore, the response ratio of BG, CBH, NAG, and LAP were negatively correlated with drought intensity, whereas MBN and MBP and the activity levels of BG and CBH were negatively correlated with drought duration. Additionally, the response ratio of BG and NAG were negatively correlated with MAT. In conclusion, drought significantly reduced soil microbial biomass and enzyme activity on a global scale. Our results highlight the strong impact of drought on soil microbial biomass and carbon- and phosphorus-acquiring enzyme activity.

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