Forestry Flashcards

(37 cards)

1
Q

3 types of forest

A

temperate

coniferous

tropical rainforest

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2
Q

Coniferous forests characteristics

A

High latitudes in Canada, northern Europe and northern Asia.

Conifers – needle shaped leaves.

Low biodiversity

Harsh conditions

Lower productivity

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3
Q

Characteristics of temperate forests?

A

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.

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4
Q

Characteristics of tropical rainforests?

A

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.)

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5
Q

Softwood characteristics, examples and uses?

A

fast growing
cheap
less fire resistant than hardwood

conifers

windows
doors
low quality furniture

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6
Q

Hardwood characteristics , examples and uses?

A

Slow growing
Expensive
More fire-resistant than softwood

Mahogany

Construction
Flooring
High quality furniture

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7
Q

How is paper made?

A

wood is pulped down to original cellulose fibres that are then pressed into flexible sheets and then dried

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8
Q

List everything about quinine?

A

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

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9
Q

List all the main resources of forests?

A

cotton
food
fuel
medicine
fibres
material

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10
Q

Why is there high amounts of c02 in soil in coniferous forests?

A

decomposition is slow due to cold temperatures

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11
Q

Why is most nutrients stored in coniferous forests?

A

litter because decomposition takes a long time

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12
Q

How can a forest provide a micro climate?

A

changes in:

light
wind
humidity

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13
Q

Why is humidity higher in forests?

A

evaporation and evapotranspiration

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14
Q

How do forests provide humus as a service?

A

leaf litter decomposes

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15
Q

What % of wood does the UK import?

A

85% - produces 15%

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16
Q

Outline the difference in species between traditional and modern forestry?

A

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

17
Q

Outline the difference in management techniques between traditional and modern forestry?

A

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

18
Q

Outline the difference in age between traditional and modern forestry?

A

varied age in traditional

vs

same age due to all being placed at same time in monoculture

19
Q

Outline the difference in harvesting between traditional and modern forestry?

A

grown to maturity and harvest whole tree

OR

coppice + pollard

never completely clear area

20
Q

How has demand changed for wood since pre industrial time?

21
Q

What is mdf wood?

A

chipped wood mushed into a solid board

rather than keeping the natural structure for furtniture/construction

22
Q

How has biodiversity changed now in commercial forestry?

A

hindered biodiversity due to monocultures

23
Q

Why do modern tree plantations grow plants close?

A

easier management

24
Q

Implication of growing non indigenous cultivation of trees

A

do not support native wildlife - these species needed for pollination + seed dispersal

25
Why do modern tree plantations grow as a monoculture?
ease of management for: thinning felling planting
26
Benefits of close planting? + negative
so they can compete for light and grow taller and straighter discourages other plants under canopy which compete for nutrients/light/water BUT diversity and reduces and lack of food for animals
27
What is clear felling?
completely removing a whole area
28
What is selective logging?
carefully selecting individual trees to cut down
29
List a few types of deforestation?
agriculture hydroelectric dams urbanisation livestock farming mining transport infrastructure
30
Hardwood takes a long time to grow. What does this mean for the MSY?
more likely to reach MSY - this is because hardwood trees take longer to grow
31
What is pollarding
same as coppicing but down above breast height to avoid the regrowth being eaten by livestock
32
What is agroforestry
growing crops alongside forest
33
what is coppicing
cutting broadleaved trees (like hazel, ash, or chestnut) down to near ground level (the "stool") during the winter dormant season
34
list features of growing a sustainably managed forest
selective felling mixed age structure indigenous trees mixed species plantation harvesting rate below the MSY
35
What is FSC 1992?
Forest Stewardship Council set up to monitor timber production and the sustainability of individual forestry operations
36
What is debt for nature swaps
A country is told if they protect nature their debt is reduced or cancelled
37