Why is tundra soil poor in a nutrition?

Tundra soil is poor in nutrients primarily due to its cold climate and short growing season, which limit organic matter decomposition. The permafrost layer restricts root penetration and water drainage, leading to low microbial activity and minimal nutrient cycling. Additionally, the slow accumulation of organic material, mainly from sparse vegetation, results in nutrient-poor conditions. Consequently, the soil is often acidic and lacks essential minerals for plant growth.