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Changing Patterns of Natural Vegetation (Forests (Sub Tropical Broadleaf…
Changing Patterns of Natural Vegetation
Why is vegetation important?
Affects soil
Ecosystems
Climate
Natural vegetation = plants growing freely without human help
Forests
Sub Tropical Broadleaf
large amount of rain, dry and hot all year
Mediterranen
dry summer, cool winter, less than 1000mm of rain
Tropical broadleaf
large amounts of rain, very hot temps
Broadleaf deciduous
Avg temp (7-17) four seasons, warm summers, mild winters
Mixed forest
zone between coniferous and broad leaf deciduous
Boreal
harsh conditions, cold temps, short growing season
Grasslands
Tropical
Tropical - short rainy season, tall grasses, animal grazing
Do not need much precipitation
Included wildflowers and grass like plants
Mid latitute - short and tall grasses, growing season - 100-175 days
Deserts
Extremely dry (less than 250mm rain a year)
3 types - semi scrub, desert, tundra, high moutain
Benefits of Vegetation
Habitats
gives animals food, water and shelter
Oxygen
Photosynthesis
Resources
humans use vegetation for shelters, furniture, transportation, eating, medicine.
Recreation
ecotourism
conservation and preservation
Factors that affect vegetation
Temperature
photosynthesis, latitude/elevation
Moisture/Precipitation/Evaporation
Soil
Humus
Climate
Human affects
Deforestation (cutting down trees)
Desertification (fertile land to desert)
Burning grasslands (encourage new growth)
Patterns and Species
Loss of Biodiversity (variety of life)
Animal extinction/endangered
Habitat loss
Rise in non native plants (develop in a new area)
invasive species