Land use and cover change ( LUCC) Flashcards Preview

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Flashcards in Land use and cover change ( LUCC) Deck (20):
1

Types of land change

1) deforestation
2) ecosystem fragmentation
3) altered drain systems
4)modified coastlines
5) urban and industrial expansion/contraction
6) minning
7) changing forms of agriculture

2

Human actions that cause land change

1) population
2) resource demands and exploitation
3) political systems
4) social and cultural values
5) technology

3

Indicators of the level of impact to anthromes

1) percentage of vegetation clearing
2)level of genetic and species diversity
3)degree of ecological fragmentation
4) soil and water condition and quality

4

Anthropogenic biomes

1) forrest and woodland
2) Agricultural
3) urban
4)fresh water
5) marine



5

Forests and woodland anthromes

1) populated forest
-near urban settlement
2) remote forests
-far from large population centres
3) wild forests
-no civilisation

6

Agricultural anthromes

1) cropland
-moderately intense
-irrigated
-mosaic
2) rangelands
-rely on nature

7

Urban anthromes

1) major cities
2) regional towns
3) urban villages

Most are found in boreal forest

8

Reasons for locations of urban anthromes

1) resources
2) accessibility
3)religion
4) defence
5)government
6) cultural values
7) landforms
8) rivers
9) coastlines

9

Reasons for land change in Freshwater anthromes

1) eutrophication (pollution)
2) hydrological disturbance
3) climate change
4) over exploitation
5) invasive species

10

Affecting Marine anthromes

1) over fishing
2) pollution
3) introduced species

11

Commercial economy vs subsistence economy

Commercial
-aim to produce surplus
-need continuous economic growth
-uses large amounts of recourses but has wealth to maintain

Subsistence
-limited infrastructure
-not suitable for rising population
-

12

Causes of LUCC

S-ocial
H-istorical
E-nvirimental
E-conomic
P-olitical
T-echnological

Indirect
- alterations to fire regimes

Direct
-urban expansion

13

Reasons for deforestation

1) shelter
2) agricultural land and expansion
3) meat production
4)fuel ans timber extraction
5) biofuel production
6) rapid urbanisation
7) infrastructure development

14

Factors influenceing nature, rate and extent or land cover change

1) population growth
2) growinf affluence
3) advances in technology

15

Examples of technology which changes land cover

1) dams
2) forest cleaning machinary and infrastructure
3) hybrid and genetically engineered plants

16

Causes of soil degradation

1) over grazing
2) agricultural activities
3) deforestation
4 over exploitation for fuel wood
5) industrialisation

17

How to deal with LUCC

1) government policies
2) institution arrangement
3) land ownership
4) type of economy/ideaolgy and cultural

18

Organisations protecting world forests

1) UNFF ( united nations forum on forests
2) global forest watch 2.0
3) REDD ( reducing emissions from deforestation and forest degradation)

19

Impacts of land cover change

1) changes to the water cycle
2) soil erosion and degradation
3) loss of habitat and biodiversity
4) degradation aquatic and marin environments
5) loss of ecosystem services
6) urban heat islands

20

Types of soil degradation

1) soil salinity
-salty groundwater reaches surface killing vegetation

2) soil erosion
- removal of top layer by wind or water

3) compaction
- animals and machinary

4) acidfication
- use of chemical fertilisers