Biology · Mineral Nutrition
Under conditions of prolonged severe drought, how is soil nitrogen cycling affected?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Overall microbial activity decreases due to desiccation, reducing overall nitrogen cycling rates✓
- 2Nitrification rate increases due to higher oxygen diffusion in dry soil
- 3Denitrification increases significantly due to widespread soil hypoxia
- 4Biological nitrogen fixation increases to compensate for plant stress
Correct answer
Overall microbial activity decreases due to desiccation, reducing overall nitrogen cycling rates
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