The relationship between climate and vegetationCharacteristics of the major types of natural vegetation in the worldDescribe and compare the sub types of vegetationBenefits of natural vegetation to people
Plants which are grown naturally and not done by man.Forests, Grasslands & Desert Vegetation
Remember: Rainfall and Temperature, and differences between amount of sunlight.Climate Vegetation relationship
Large areas of land that consist mainly of trees and a variety of other plantsTypes of forests differ according to different climatesGeog. Textbook pg. 159
Thrives in warm tropical climates, with temperatures of 20°C to 30°C. Also has rainfall ranging from 1000mm to 2000mm
Characteristics of tropical rainforests Evergreen Trees have waxy drip tip leaves Trees have broad leaf surfaces to absorb as muh sunlight as possible. Trees grow very close to one another, making it dense in nature
Three layers of tropical rainforests Emergent, Canopy, Undergrowth
Undergrowth Made of shrubs, grasses, ferns, mosses and fungi Plant growth is sparse because very little sunlight reaches this layer.
Canopy Tall trees reaching a height of 15 to 30 metres Crowns of trees interlock to form a continuous leaf cover Canopy blocks out 70 to 100 percent of sunlight.
Emergent Height of 40 to 50 metres Trees receive more sunlight at this layer and have buttress roots for support
Occurs largely in temperate regions Two main types: Temperate Deciduous Forests Temperate Coniferous Forests
Vegetation thrives in temperatures from -2°C to 18°C and rainfall ranging from 750mm to 1800mmVegetation has leaves where it falls off to prevent water loss, in times where there is little water
Properties Nature of layers change across the seasons. Read pg. 167 (Questions will be asked from there!!!)
Found in places where temperatures range from -12°C to 10°C. Rainfall at 300mm to 750mmCalled coniferous due to it’s conical shape.Questions will be asked from textbook pg. 168
Two types of Grasslands Tropical Savannah Temperate GrasslandsOccurs in areas where rainfall is seasonal in nature.
Found in places in the tropics Characterised with tall grasses along with scattered trees. Trees have large trunks to help store water.
Trees have small leaves to prevent water loss through Transpiration
Found in seasonal climates, which can be very hot in summer and cold in winter.Dry climate with strong windsTemperatures range between -20°C and 10°C
Grasses tend to be shorter due to lack of rainfall.Trees are scarce.
Hot Desert Vegetation and Cold Tundra VegetationDesert Vegetation has very little leavesCan occur at temperatures of -30°C to 45°C depending on climate
Vegetation tend to have fleshy stems like for example cactusHot desert plants have long rootsDesert plants have shorter life cycles
Temperature rarely rises above 0°C, with little rainfall all year round.Mostly snowing rather than rain.Textbook Pg. 174
Natural Resource Source of wood for various uses
Medicinal value Extracting medicinal properties from plants
Recreation Nature reserves provide opportuinities for relaxation and tourism