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Global patterns in vegetation distribution. Outline. World climate zones Soil formation Primary production World biomes. 1. World climate zones. Temperature. Precipitation. Köppen Climate Classification. 90 o N. 0 o. 90 o S. Köppen Climate Classification. 90 o N. 0 o.

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Presentation Transcript
outline
Outline
  • World climate zones
  • Soil formation
  • Primary production
  • World biomes
slide4

Temperature

Precipitation

slide6

Köppen Climate Classification

90oN

0o

A - tropical climates

90oS

slide9

Köppen Climate Classification

90oN

B - arid, semiarid climates

0o

A - tropical climates

B - arid, semiarid climates

90oS

slide12

Köppen Climate Classification

90oN

C - mesothermal climates

B - arid, semiarid climates

0o

A - tropical climates

B - arid, semiarid climates

C - mesothermal climates

90oS

slide13

Humid subtropical (Cfa)

- year-round precipitation

- hot summers

slide14

Humid subtropical (Cwa)

- winter drought

- hot summers

slide15

Köppen Climate Classification

90oN

D - microthermal climates

C - mesothermal climates

B - arid, semiarid climates

0o

A - tropical climates

B - arid, semiarid climates

C - mesothermal climates

90oS

slide16

Humid continental (Dfb)

- year-round precipitation

- warm summers

slide17

Köppen Climate Classification

90oN

E - polar climates

D - microthermal climates

C - mesothermal climates

B - arid, semiaridclimates

0o

A - tropical climates

B - arid, semiarid climates

C - mesothermal climates

90oS

E - polar climates

slide19

Soil forming factors:

  • Geology (parent material)
  • Climate (temperature & moisture)
  • Topography (slope & drainage)
  • Biology (vegetation & soil organisms)
  • Time
slide20

Soil Properties

Texture

70% sand

10% clay

20% sand

slide21

porosity

(pore space)

permeability

(connectivity)

Soil Properties

slide22

Soil Properties

Cation exchange capacity (CEC)

slide25

Photosynthesis (gross primary production)

H2O + CO2 + light  -CHOH- + O2

water

carbon

dioxide

solar

energy

glucose,

carbohydrate

oxygen

slide26

Respiration (energy consumption)

-CHOH- + O2 H2O + CO2 + energy

slide27

Net primary production, NPP

NPP = photosynthesis - respiration