Kivennäishumus

Kivennäishumus, also known as mineral humus, refers to a complex organic matter found in soils that is associated with mineral particles. It is a significant component of soil organic matter and plays a crucial role in soil fertility and structure. Kivennäishumus is formed through the decomposition of plant and animal residues, which are then bound to clay and silt particles in the soil. This association protects the organic matter from rapid decomposition, leading to its accumulation over time.

The physical structure of kivennäishumus contributes to soil aggregation, which improves aeration and water infiltration. Chemically, it enhances the soil's cation exchange capacity, meaning it can hold onto essential nutrients like calcium, magnesium, and potassium, making them available for plant uptake. This nutrient retention capacity is vital for supporting healthy plant growth and reducing nutrient leaching from the soil.

The properties of kivennäishumus can vary depending on the parent material of the soil, climate, and vegetation. Soils rich in kivennäishumus are generally considered fertile and productive. Understanding the formation and characteristics of kivennäishumus is important for sustainable soil management practices, as it influences many soil functions critical for agriculture and ecosystem health. Its presence is a good indicator of healthy soil that can support a robust environment.