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  2. Soil functions - Wikipedia

    en.wikipedia.org/wiki/Soil_functions

    Soil can perform many functions and these include functions related to the natural ecosystems, agricultural productivity, environmental quality, source of raw material, and as base for buildings. [1] Six key soil functions are: [2][3][4][5][6] Food and other biomass production. Environmental Interaction. Biological habitat and gene pool.

  3. Soil ecology - Wikipedia

    en.wikipedia.org/wiki/Soil_ecology

    Soil is a variable mixture of broken and weathered minerals and decaying organic matter. Together with the proper amounts of air and water, it supplies, in part, sustenance for plants as well as mechanical support. The diversity and abundance of soil life exceeds that of any other ecosystem. Plant establishment, competitiveness, and growth is ...

  4. Humus - Wikipedia

    en.wikipedia.org/wiki/Humus

    In classical [1] soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground". [2]

  5. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...

  6. 7 Plants That Improve Soil Quality, According to Gardening ...

    www.aol.com/7-plants-improve-soil-quality...

    Lupines have a root system that benefits the soil and the surrounding plants by balancing or fixing the nitrogen in the soil. I grew this flower for many seasons on my patio in Los Angeles and it ...

  7. Soil biology - Wikipedia

    en.wikipedia.org/wiki/Soil_biology

    Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life, soil biota, soil fauna, or edaphon is a collective term that encompasses all organisms that spend a significant portion of their life cycle within a soil profile, or at the soil- litter interface. These organisms include earthworms, nematodes, protozoa ...

  8. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil.

  9. Soil food web - Wikipedia

    en.wikipedia.org/wiki/Soil_food_web

    The soil food web is the community of organisms living all or part of their lives in the soil. It describes a complex living system in the soil and how it interacts with the environment, plants, and animals. Food webs describe the transfer of energy between species in an ecosystem. While a food chain examines one, linear, energy pathway through ...