Nature: Ecosystem dynamics Flashcards
1
Q
GIS
A
computer software that uses spatial data and links other data to that in order to create a model.
2
Q
The earth exists of: (4 spheres)
A
- Cryosphere
- Biosphere
- Lithosphere
- atmosphere
3
Q
Cryosphere
A
“Geography”
- climate
- soils
- water
- landscape
- ‘urbanscapes’
4
Q
Lithosphere
A
“Geology”
- Rocks, deposits
- Tectonics
5
Q
Biosphere
A
“Ecology”
- vegetation
- animal life
6
Q
The core disciplines in sustainable science
A
geography and ecology
7
Q
Land degredations
A
is the reduction or loss of the biological and economic
productivity and complexity of terrestrial ecosystems, including soils,
vegetation, other biota, and the ecological, biogeochemical and
hydrological processes that operate therein, in arid and semi-arid lands,
resulting from various factors including climatic variations and human
activities
8
Q
Erosion uncertainties
A
- It is difficult to distinguish man-induced erosion and other forms of degradation from natural changes in the landscape.
- It occurs over a long timescale and is therefore difficult to distinguish past from present processes and causes.
