carbon cycle 2.1.7 -carbon stores in different biomes Flashcards
define biosphere
where living organisms can live
name the 7 different Biomes
- Tropical Rainforest
- Temperate Forest (deciduous/trees)
- Taiga/ Boreal forest (coniferous)
- Temperate grasslands
- Tropical grasslands
- Desert
- Tundra
name the one factor affecting ecosystems
the climate
list the 5 things the climate is influenced by
- precipitation
- sunlight intensity
- location’s latitude
- biome type
- temperature
what do the 5 influences of climate, directly influence the capacity of a biome to store _______
Carbon
Name the 3 physical factors affecting plant growth in tropical rainforests
light- at TF latitude the sunlight has little variation so sequestration and all year growth occurs
temperature- high average (23-30)
precipitation- high annual rainfall due to low pressure
this is optimum conditions for terrestrial plant growth and biomass carbon storage
which has the biggest proportion of carbon stores in tropical rain forests
out of: Soil, Litter, Biomass
Biomass is the greatest in TR
then it is litter and soil which are very equal
define net primary productivity
NPP means: The rate an ecosystem accumulates energy or biomass in terms of photosynthesis, after excluding the energy used for respiration
name the location example for a tropical rainforest
How many Gtc is stored in the biomass and soil
amazon rain forest
550 Gtc stored in the biomass and soil of TR
List the biodiversity in a tropical rain forest
- vegetation types
-plant species
how much of the worlds plant species are found in the TR
- vegetation types= field layer, shrub layer, under canopy, continuous canopy, emergent canopy
- plant species= evergreen/ coniferous trees
2/3 of the worlds plant species are found in the tropical rain forest
name the location example of Temperate Forests
how many Gtc is stored in the biomass and soil
Prairies in North America
185Gtc
in the biomass and soil how much carbon is stored in:
-Tropical Rainforests
-Temperate forests
what is the difference in Gtc
TR is 550 Gtc
TF is 185 Gtc
the difference is 365 Gtc
in temperate forests
what conditions are needed in autumn to ensure rapid decomposition
warm humid conditions to ensure rapid decomposition
List the biodiversity in a temperate forest
- vegetation types
-species
vegetation type= short perennials that have growth buds below the surface- as a why of adapting to drought, fire, permafrost
species= earthworms and Bisen (like a buffalo)
Name the 3 physical factors affecting plant growth in Temperate Forests
- light- seasonal variations of light, weak in winter causing change in plant growth throughout a year
- temperature- high altitude, deal with extreme temperature ranges
- precipitation- lower annual rate of rainfall, spread out evenly in a year
list the 3 direct threats on tropical rainforests due to human activity
- deforestation
- land conversion due to a growing demand for resources = this reduces water and carbon stores and soil health
- commercial agriculture =soya bean, cattle, palm oil - 1/3 of the TR in costa rica has been cleared for cattle ranching
why could temperate grasslands store more carbon than temperate forests
but why does it not happen
grasslands are less susceptible to fires and droughts
but why not- is due to less than 10% of the worlds grasslands are protected
what is an indirect threat to TR
climate change
causes wild fires and droughts
A threat of temperate forests is H……. L….
List 3 human activities that have caused this
o
c c
unsus a p
Habitat loss of temperate forests due to:
1. Overgrazing
2. crop clearing
3. unsustainable agriculture practices
how much of the temperate forests has been lost due to industrial and agriculture uses
what is the % of remaining original tallgrass prairie exits
1/2
1%
Deforestation impacts the carbon cycle because it disrupts several important s…….
Name the 3 affects to carbon s…….. that happens due to deforestion
- ↑ in o……………- leading to s…… e……..- resulting in a L…. of c……. in the s…. s…….
- ↓ in c…….. stored in b…………
- ↓ in i…… of o……… m…….. to the s…. s…..
- Increase in overlandflow- leading to soil erosion- resulting in permanent loss of carbon stored in Soil
- Loss of carbon stored in biomass
- The reduction of inputs of organic matter in the soil store