Forestry Flashcards

1
Q

4 characteristics of a temperate forest biome:

A

1) Deciduous trees
2) High levels of precipitation
3) Large wild canopy
4) Non seasonal vegetation

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2
Q

3 main types of agroforestry:

A

1) Agrisilvicultural
2) Silvopastoral
3) Agrosylvopastoral

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3
Q

what is Agrisilvicultural agroforestry?

A

A system that combines crops with trees

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4
Q

what is silvopastoral Agroforestry?

A

A system that combines forestry and grazing

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5
Q

what is Agrosylvopastoral agroforestry?

A

A system that contains all three elements: Trees, crops and animals

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6
Q

4 benefits of agroforestry:

A

1) Erosion control
2) Crop diversity (reduced risk)
3) Soil improvement (both structurally and chemically)
4) Sustained year round production

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7
Q

4 cons of agroforestry:

A

1) Fewer short term returns
2) Long term returns difficult to predict
3) Crop yield decreases if its not planned out
4) Initial expenditure is required before returns are seen.

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8
Q

What is the difference between softwood and hardwood?

A

Softwood is faster growing (less dense)

hardwood is slower growing (more dense)

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9
Q

What does REDD stand for?

A

Reducing emissions from deforestation and degradation

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10
Q

2 bad points about the REDD+ program:

A

1) REDD forest definitions can encourage plantation forestry, leading to mono-cropping and food insecurity.
2) There is a lack of environmental safeguards in place to protect affected communities and to avoid loss of biodiversity

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11
Q

Define what a forest is:

A

A forest is a community of trees, shrubs, herbs and associated organisms that cover a large area that uses gasses, water and soil nutrients as the community reproduces and becomes mature.

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12
Q

Which type of wood do gymnosperms usually produce?

A

Softwood

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13
Q

which type of wood do angiosperms usually produce?

A

Hardwood

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14
Q

3 different softwood trees:

A

1) Cedar tree
2) Douglas fir
3) Yew tree

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15
Q

3 Different hardwood trees:

A

1) Alder
2) Ash
3) walnut

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16
Q

whats the difference between gymnosperms and angiosperm trees?

A

Gymnosperms usually have seeds that are enclosed in cones whereas angiosperms don’t

17
Q

what are the typical goals of woodland creation for stakeholders? (3 points)

A

1) renewable energy source
2) biodiversity
3) for a long term investment

18
Q

what are the main climate change factors that will affect trees in the UK (5 points)

A

1) Hotter summers meaning a shortage of water
2) Increased risks of flooding in the winter months
3) colder winters
4) potential risks of wildfires due to heat
5) increased pest and disease problems

19
Q

What are the thinning preferences for a Scots Pine plantation?

A

Thinned early originally and regularly from then on

20
Q

Whats the main use of Scots Pine wood?

A

Sold as commercial timber due to its attractive yellow/red colour and outside durability. (known as ‘redwood’)

21
Q

what are the 3 main threats facing UK forests in the next 30 years?

A

1) brexit, dont know what subsidies are going to do for farming
2) climate change
3) lack of housing for an ever growing population

22
Q

what does the REDD+ program do?

A

Gives people money rewards for protecting their forests or from stopping them from degrading.

23
Q

REDD+ schemes include

A

1) Payments for Environmental Services (PES)
2) Integrated Conservation Development Projects (ICDPs)
3) Social Forestry
4) Participatory Forest Management

24
Q

What rotational period do Scots Pines suit?

A

70-90 years

25
Q

4 things forests do that influence soil development

A

1) reduce soil erosion from wind and water run off
2) some trees increase soil nutrients like nitrogen
3) leaves increase organic matter build up
4) reduces soil compaction through the roots breaking up the soil.

27
Q

Shade Intolerant Tree Species (4 points)

A

1) large light requirement
2) fast growth
3) soft timber
4) pioneer species

28
Q

Shade Tolerant Tree Species (4 points)

A

1) can survive under closed canopy
2) slow growing
3) hard wood
4) ‘climax community’

29
Q

How do forests improve soil development? (3 points)

A

1) Increase soil biodiversity
2) Increase stability of soil horizons
3) Reduce soil erosion

30
Q

What are the main characteristics of a hardwood?

A

1) Usually come from deciduous trees
2) Tend to be slower growing
3) More dense

31
Q

What are the main characteristics of a softwood?

A

1) Usually come from conifers
2) tend to be faster growing
3) Less dense

32
Q

What is climate change’s effect on Southern tree species?

A

Boundary reduction due to velocity of climate change

33
Q

What is climate change’s effect on Northern tree species?

A

Boundary expansion driven by soil biology and plant traits

34
Q

What effect does drought have on forests Carbon levels?

A

Forests become a source of Carbon in droughts due to reduced uptake of C02 and increased respiration.

35
Q

How does light interception (canopy cover) effect forest growth?

A

1) Higher levels of light interception means reduced biodiversity underneath canopy.
2) Thinning can reduce light interception and increase biodiversity.
3) Less presence of shade intolerant species

36
Q

What Ecosystem Services do forests provide?

A

Wildlife habitat, places for relaxation or recreation, flood mitigation and carbon sequestration

37
Q

How can forests be managed to maintain biodiversity?

A

1) Regular thinning to allow light penetration
2) Maintain various tree species
3) Improve ecosystem structure
4) Improve ecosystem function