3 types of forest
temperate
coniferous
tropical rainforest
Coniferous forests characteristics
High latitudes in Canada, northern Europe and northern Asia.
Conifers – needle shaped leaves.
Low biodiversity
Harsh conditions
Lower productivity
Characteristics of temperate forests?
Shed leaves in winter to reduce water loss by evapotranspiration.
Oak, maple, beech, elm and ash.
There are layer (stratification).
Herb layer, understory and canopy.
Characteristics of tropical rainforests?
Tropical rainforest.
High productivity
High rainfall and light levels
Continually growing
Mahogany and teak
High biodiversity
Stratification (forest floor, shrub layer, under canopy, canopy, emergent.)
Softwood characteristics, examples and uses?
fast growing
cheap
less fire resistant than hardwood
conifers
windows
doors
low quality furniture
Hardwood characteristics , examples and uses?
Slow growing
Expensive
More fire-resistant than softwood
Mahogany
Construction
Flooring
High quality furniture
How is paper made?
wood is pulped down to original cellulose fibres that are then pressed into flexible sheets and then dried
List everything about quinine?
comes from the bark of the cinchona tree
The tree is most commonly found in South America
Quinine was originally developed as a medicine to fight malaria but the medicine is now synthetically produced.
other chemical compounds that have yet to be discovered
List all the main resources of forests?
cotton
food
fuel
medicine
fibres
material
Why is there high amounts of c02 in soil in coniferous forests?
decomposition is slow due to cold temperatures
Why is most nutrients stored in coniferous forests?
litter because decomposition takes a long time
How can a forest provide a micro climate?
changes in:
light
wind
humidity
Why is humidity higher in forests?
evaporation and evapotranspiration
How do forests provide humus as a service?
leaf litter decomposes
What % of wood does the UK import?
85% - produces 15%
Outline the difference in species between traditional and modern forestry?
would’ve been a mixture of species to provide different properties
oak - home/ship building
beech - furniture
hazel - fencing panels
now modern has less variety
Outline the difference in management techniques between traditional and modern forestry?
standard trees - allow tree to grow to maturity
pollarding - cutting branches to let tree grow
coppicing - cutting tree down to ground level
vs
whole area cut down now
Outline the difference in age between traditional and modern forestry?
varied age in traditional
vs
same age due to all being placed at same time in monoculture
Outline the difference in harvesting between traditional and modern forestry?
grown to maturity and harvest whole tree
OR
coppice + pollard
never completely clear area
How has demand changed for wood since pre industrial time?
declined
What is mdf wood?
chipped wood mushed into a solid board
rather than keeping the natural structure for furtniture/construction
How has biodiversity changed now in commercial forestry?
hindered biodiversity due to monocultures
Why do modern tree plantations grow plants close?
easier management
Implication of growing non indigenous cultivation of trees
do not support native wildlife - these species needed for pollination + seed dispersal