which biome in the sourthern region has nutrient poor soils

The biome in the southern region with nutrient poor soils is the tundra.

The biome in the southern region with nutrient-poor soils is typically the Tundra biome. Tundra soils are often low in nutrients because of factors like a short growing season, permafrost, and limited decomposition of organic matter. This leads to a lack of nutrients necessary for plant growth.