ENV100Y5 Lecture 24: ENV100
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ENV100Y5 Full Course Notes
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Document Summary
Peat soils formed over 8000 years, and are up to 6m thick. Carbon balance in peat, where primary production stores carbon and decomposition releases carbon. Interdisciplinary research project studying the influence of climate on carbon balance (and vice versa) Soil consists of mineral matter, organic matter, water, air, and other gases. Dead and living microorganisms and decaying material. Bacteria, algae, earthworms, insects, mammals, amphibians, reptiles. Parent material: base geologic material of soil. Bedrock: continuous mass of solid rock (the earth"s crust) Lunar regolith is a layer of loose, heterogeneous superficial material covering solid rock. It includes dust, soil, broken rock, and other related materials and is present on earth, the moon, mars, some asteroids, and other terrestrial planets and moons. Physical (mechanical) weathering: no chemical changes in the parent material. Wind, rain, thermal expansion and contraction, water freezing breaks down the rock. Chemical weathering: substances chemically interact with parent material. Water and gases break down the rock.
