ENV100Y5 Lecture Notes - Lecture 7: Pedogenesis, Biotic Component, Regolith
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ENV100Y5 Full Course Notes
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Document Summary
Chapter 7- soil: all about sustainability, lay foundation for ecosystems. Interdisciplinary research project studying the influence of climate on carbon balance (and vice versa) Soil is a complex material: has biotic component to it- things living in it, mineral matter, organic matter, water, gases dead/living microorganisms; decaying material, bacteria, algae, earthworms, insects, mammals, amphibians, reptiles, supports plant growth** Soil formation starts with bedrock: parent material = base geologic material of soil bedrock = continuous mass of solid rock (the earth"s crust) regolith (sediment) = broken-up rock, weathering= process that break down rocks. Climate plays a role in it: physical (mechanical) = no chemical changes in parent material, e. g. wind, rain, water freezing, chemical = substances chemically interact with parent material (water most imp. That interacts with rock: e. g. water and gases, biological = organisms break down parent material, e. g. tree roots and lichens.
