IB Environmental systems and societies Topic 5.2A Land and Land Use Revision Notes (SL/HL)

IB Environmental systems and societies Topic 5.2A Land and Land Use Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Land is a Finite Resource, so How We Use It Matters

Global Limits on Land Availability

Only 29 percent of Earth's surface is land, and the rest is ocean.
Of this land, 71 percent is habitable, while the rest is barren or covered in ice.
About 46 percent of habitable land is farmed, which shows heavy pressure on limited space.
Most high-quality soils are already in use, so options to expand are limited.

Definition

Habitable land

Habitable land is land not covered by glaciers or classified as barren, and that can support ecosystems and human use.

How Agriculture Uses Land

Around 70 percent of ice-free land is used for agriculture and forestry.
Livestock farming takes up nearly three-quarters of global agricultural land.
1. Crop cultivation sits on the more fertile soils.
2. Marginal land with steep slopes, shallow soils, or poor nutrients supports pastoral farming.

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Land is a Finite Resource, so How We Use It Matters

Global Limits on Land Availability

Only 29 percent of Earth's surface is land, and the rest is ocean.
Of this land, 71 percent is habitable, while the rest is barren or covered in ice.
About 46 percent of habitable land is farmed, which shows heavy pressure on limited space.
Most high-quality soils are already in use, so options to expand are limited.

Definition

Habitable land

Habitable land is land not covered by glaciers or classified as barren, and that can support ecosystems and human use.

How Agriculture Uses Land

Around 70 percent of ice-free land is used for agriculture and forestry.
Livestock farming takes up nearly three-quarters of global agricultural land.
1. Crop cultivation sits on the more fertile soils.
2. Marginal land with steep slopes, shallow soils, or poor nutrients supports pastoral farming.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Topic 1: Foundation 3 subtopics

Topic 2: Ecology5 subtopics

Topic 3: Conservation and biodiversity3 subtopics

Topic 4: Water4 subtopics

Topic 5: Land2 subtopics

Topic 6: Atmosphere and climate change4 subtopics

Topic 7: Natural resources3 subtopics

Topic 8: Human populations and urban systems3 subtopics

HL lenses 3 subtopics

IB Environmental systems and societies 5.2A Land and Land Use Notes

Topic 1: Foundation 3 subtopics

Topic 2: Ecology5 subtopics

Topic 3: Conservation and biodiversity3 subtopics

Topic 4: Water4 subtopics

Topic 5: Land2 subtopics

Topic 6: Atmosphere and climate change4 subtopics

Topic 7: Natural resources3 subtopics

Topic 8: Human populations and urban systems3 subtopics

HL lenses 3 subtopics

Land is a Finite Resource, so How We Use It Matters

Global Limits on Land Availability

How Agriculture Uses Land

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Land is a Finite Resource, so How We Use It Matters

Global Limits on Land Availability

How Agriculture Uses Land

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account