Summary
Summary Unit 5. Soil ESS IB Notes
- Course
- Institution
- Book
Chapter 5 for the ESS IB syllabus. The notes are in great detail and basically replace the book.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
Class Notes IB ESS Unit 7
-
Class Notes IB ESS Unit 4
-
Class notes IB ESS Unit 3
Seller
Followivanstanisavljevic
Reviews received
Content preview
5.1: Introduction to Soil SystemsWhat is soil?
o Dynamic ecosystem made up of: minerals, organic material, gases and
liquids
o Has inputs, outputs, storages and flows
o Quality of soil influences primary productivity
o Forms earth’s atmosphere: Lithosphere (rocks), biosphere (living
matters), hydrosphere (water)
Soil Importance
o Soils important to humans because:
- Medium for plant growth (human’s food)
- Stores 0,005% of earth’s freshwater
- Habitat for billions of microorganisms, animals, insects
- Provides raw materials: clay, sand, gravel, minerals
Soil Structure
O: organic matter, litter layer of plant
residues
A: - Surface soil: mineral soil with
organic matter and soil life.
-Depleted of: iron, clay and calcium,
organic compounds
B: Subsoil: Layer that accumulates iron,
clay, aluminum and organic compounds-
illuviation
, C: Parent rock: layer of large, unbroken rocks. May accumulate more
soluble compounds
R: Bedrocks: continuous masses of hard rock, cannot be excavated by
hand
Transfers of material within soil
Biological mixing
Leaching
Inputs and outputs
Inputs:
Fertilizer
Biological Nitrogen Fixation: biochemical process where nitrogen
gas from atmosphere is chemically combined into more solid forms.
Ability to fix nitrogen restricted to symbiotic associations with
legumes and microorganisms
Plant and animal residues
Precipitation
Weathering: process that adds nutrients to ecosystem over long
periods of time- calcium, magnesium, phosphorus, potassium
Atmospheric Input: large quantities of nutrients added to ecosystem,
through precipitation or biological processes:
- Carbon: photosynthesis
- Nitrogen: lightning and precipitation
- Sulfur, calcium, sodium: precipitation
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ivanstanisavljevic. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$13.76. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now