Lecture 13 - Global emission, productivity and CO2 responses

Question 1

T T B T T D T

This acronym is referring to most productive biomes in terms of NPP… name them.

Answer 1

Tropical forest
temperate forest
boreal forest
tropical savannah & grassland 
temperate grasslands & shrublands
deserts
tundra

Question 2

Atmospheric C stocks are …. as vegetable stocks

Answer 2

the same

Question 3

Soil C stocks are ..-.. atmospheric C stocks

Answer 3

5-7x

Question 4

in terms of FACE crops, wheat and rices response was …

Answer 4

non-existent

-average FACE increase of all crops ~17% though

Question 5

NDVI is the .. .. .. ..

Answer 5

noramlised diference vegetation index

-measures leaf cover adn can assess growing season length

Question 6

Key climate change drivers [Seddon] are .. temperature, .. availabiltiy and .. cover

Answer 6

air, water, cloud

-ecosystems closer to critical thresholds respond more

Question 7

At a higher CO2 world, plants will have greater .. .. efficiency

Answer 7

water use

• As it increases C uptake
• Diurnal C assimilation

Question 8

Elevated CO2 levels decrease .. … area and .. conductance

Answer 8

specific leaf

stomatal

Question 9

FACE is .. .. .. enrichment experiments

Answer 9

free air CO2

Question 10

Elevated CO2 shown an average of ..% yield stimulation
Wheat and rice did .. respond.
Overall effect likely …

Answer 10

17
not
overestimated
-Previous estimates 28-35% yield increase

Question 11

Vegetable C stocks .. atmosphere while soil has ..-..x atmosphere

Answer 11

match
3-5x

-LUC and Fossil major antrhopogenic fluxes

Question 12

Biggest forces against anthropogenic C release is increased up take from .. and ..

Answer 12

land, oceans