the role of forests Flashcards

1
Q

what is forestry

A
  • The art, science, and practice of managing forested landscapes to provide a sustained production of a variety of goods and services for society
  • Involves the whole ecosystem
  • Important for environment and economy
  • a system of many components for different services and products
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2
Q

what are the forest ecological values for the world

A

total value of forest goods and services of a 4.7 trillion USD annually

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3
Q

what are the forest ecological values for china

A

1.5 trillion USD in 2009 including carbon/oxygen, water/soil conservation, biodiversity and air purification (6 services only)

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4
Q

true or false :forest ecological values are at lead 10 times their commercial value

A

true

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5
Q

what are the ecological roles of forest

A
  • Climate and global warming
  • Protection of water and water associates values (fish habitats, recreation and power regeneration
  • Protection of soil
  • Important for channel morphology and aquatic habitat
  • Other (spiritual values and visual quality)
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6
Q

what is the microclimate related to forest ecosystems

A

changing radiation balance, temperature and local precipitation

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7
Q

how do forests deal with carbon

A

Forests can sequester carbon through photosynthesis, and also release carbon from respiration and decomposition; healthy forests normally have net high carbon storage changes and growth rates.

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8
Q

what is the projection for global warming

A

by the year 2060, the amount of CO2 is expected to double. A change of world average temperature of between 1.5 to 4.5 Celsius is predicted to result from this doubling

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9
Q

what are hydrological processes related to the protection of water

A

o Mean flows
o Peak and low flows
o Patterns and timing
o Implications for may other related values

Water quality: sediments, nutrients, temperature etc.

Forests and nutrient cycling / budgets

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10
Q

what are effects of soil erosion

A

o Water quality
o Channel morphology / reservoir capacity
o Loss of soil and land

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11
Q

what is the universal soil loss equation (USLE)

A

Soil loss = vegetationslopeprecipitation*soil erodibility

Suggesting that vegetation is the only thing we can deal with

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12
Q

How are ways forests help channel morphology

A

Hydrology, sediments and in-stream wood affect channel morphology

o Forests and hydrology
o Forests and sediments (delivery, transportation, accumulation, deposition processes)
o Forests and In-stream wood (recruitment, transport and accumulation)

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13
Q

why are forests important for habitat and wildlife

A

in a forest, more species can have high stability (ability to withstand or recover from damage); issues with monoculture

Forests provide critical habitats (vegetations, snags, in-stream wood etc.) for wildlife species

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14
Q

what are hardwood trees

A

usually broad leveled

not necessarily harder than softwood but they have more complex structures

have pores

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15
Q

what are softwood trees

A

conifers

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16
Q

what is plywood

A

manufactured made from thin sheets of wood

thin layers glued together so adjacent piles have their wood grain at right angles to each other for more strength

17
Q

what is stake

A

wooden shingles made from split logs

used for covering the top of a house

18
Q

what is ACC

A

allowable annual cut

amount of wood permitted to be harvested within one year to ensure sustainability and productivity of the forests

19
Q

what is the economic significance of forests in BC

A

has 1 billion hectares of land and half for forests

highly competitive in world production (top 4)

very important for the economy 30% of total exports to places like china

vital for forest communities in BC

20
Q

What are challenges in forestry

A

how to maintain stability in the face of declining ACC and increasing logging cost

21
Q

what are strategies for forestry in BC

A

Diversification:

it is simply the pursuits of jobs and industries that are not related to forestry. The resource sector tends to be very cyclical, and any economic diversification will help the communities even out the volatility

Value-added:

it includes activities that add further value to the timber that is harvested: from logs – lumber – sash and frame –fully prefabricated house. Each step is an example of adding value

Non-timber economic values:

botanical products (pine mushrooms, green foliage, medical products); tourism; and protection of environmental resource is also vital to long-term economic well-being

22
Q

what are MPB implications for the future of the forests

A

Potential environmental problems: hydrology, habitat, soil etc.

Potentially > 200 million m3 of un-salvaged beetle wood in recent 5-10 years.

Harvest levels will decline by over 50% in some areas once the beetle wood is either harvested or no longer of economic value.

Climate change and wildfire add more pressures

We need to act now to maximize the forest’s value and prepare for future adjustment

23
Q

how are the indigenous included in forest management decisions

A

The United Nations Declaration on the Rights of Indigenous Peoples Act (the Act) Under the Act, the Government of Canada will work in consultation and cooperation with Indigenous peoples to ->

o Take all measures necessary to ensure the laws of Canada are consistent with the United Nations Declaration on the Rights of Indigenous Peoples (the Declaration)

o Prepare and implement an action plan to achieve the objectives of the Declaration