Zonal Soils Flashcards
1
Q
What is it made of?
A
A mixture of solids, liquids and gases that occur on the land surface, characterised by layers or ability to support rooted plants
2
Q
What is the upper limit of the soil?
A
The boundary between soil and air, shallow water, live plants or plant materials that have not begun to decompose
3
Q
What is the lower boundary?
A
Less well defined and separates soil from the weathered rock layer underneath
4
Q
What are soils purpose?
A
They absorb and hold rainwater, filter and buffer potential pollutants, provide habitat for soil microbes
5
Q
What are the 5 essential functions of soils?
A
Cycling nutrients Regulating water Sustaining plant/animal life Filtering potential pollutants Physical stability
6
Q
What is a zonal soil?
A
Covering a wide geographic region, state of dynamic equilibrium
