Soil Formation

helicon
Mind Map by helicon, updated more than 1 year ago
helicon
Created by helicon about 5 years ago
62
1

Description

Mind map briefly describing the basics of the formation of soil

Resource summary

Soil Formation
1 1 Rock mechanically weathered
1.1 Forms small soil grains
2 2 Chemical Weathering
2.1 Releases important nutrients from the rock
3 3 Seeds blown onto soil and enrich it upon death
3.1 Lichens and Mosses can grow on young soils
4 4 Micro-organisms decompose plant remains
4.1 This forms humus and further enriches the soil
4.1.1 Humus helps the soil grains to bind together
5 5 Repeat until maxiumum fertility is reached
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