Forestry Final Exam Topic 9 Sustainable
forestry
objectives - correct answer-define sustainable management (SFM): Timber supply
Define SFM social, economic and environmental criteria/indicators
How can we measure and subsequently set goals and criteria around the quantity of
timber harvested in BC or other jurisdictions - correct answer-
What is the area/spatial criteria for timber supply: - correct answer-hectares of land
harvested or available to harvest
Metrics based on the quatity of wood - correct answer-Weight, equivalent volume of
timber in cubic meters
Classical methods for determining annual harvest - correct answer-Area based control
Volume based control
Area based control - correct answer-The annual harvest is expressed in hectares to be
harvested
How do we decide how much we can log each year? - correct answer-Using the annual
allowable cut
What fundamental difference in approach should we be making with a timber based
(maximum sustainable timber yield) versus EBM (ecosystem based management) -
correct answer-
Describe the annual allowable cut and the equation used - correct answer-Ours is 1
ha/year (100ha/100yr). Its the maximum amount of timber that the chief forester
determines is reasonable to harvest from the TSA or TFL
AAC=total area of forest/rotation age (ha/yr)
Volume based control: What does it look at and what is it based on - correct answer-
Looks at what quantity of volume to harvest each year (cubic meters instead of
hectares)
Based on available timber volume at start and project growth rates (rotation age)
, Planning for the potential or actual supply of timber in BC considers key questions
including (5) - correct answer-what harvest levels are possible (What amount of area
can we cut each year)
When do bottlenecks occur (periods with shortages in timber supply) and how can we
remedy/minimize them
Whats the risk of natural disturbances that will reduce the amount of timber available
(fire, insects)
are we leaving enough forest structure to provide for wildlife and biodiversity
What is the social-political risk for different scenarios (Eg. if we cut less, will there be
unemployment?)
What are inputs/consideration for determining timber supply - correct answer-Define the
timber harvesting land base (which parts of BC are available)
Resource inventories (quantity trees on that land base)
Determine productivity of timber harvesting land base (how fast will trees regrow after)
Define what timber products we want (lumber, pulp, plywood)
Define silviculture treatments and schedules (how much do we invest into growing good
quality stands)
Define environmental and social objectives/rules affecting the harvest (how much will
other goals impact timber supply?)
Where do the social and environmental goals fit within this particular hierarchy and how
might this be different for EBM - correct answer-
Timber supply review: What is it based on and who determines the ACC - correct
answer-based on an updated review of each timber supply area and tree farm licences
The chief forester determines the allowable annual cut every 10 years
Onto SFM criteria:
what are some concerns leading the emergence of initiatives to develop criteria and
indicators of sustainable forest management - correct answer-growing evidence of
forest deterioration and decline globally
related concerns about sustainable supply of timber
forestry
objectives - correct answer-define sustainable management (SFM): Timber supply
Define SFM social, economic and environmental criteria/indicators
How can we measure and subsequently set goals and criteria around the quantity of
timber harvested in BC or other jurisdictions - correct answer-
What is the area/spatial criteria for timber supply: - correct answer-hectares of land
harvested or available to harvest
Metrics based on the quatity of wood - correct answer-Weight, equivalent volume of
timber in cubic meters
Classical methods for determining annual harvest - correct answer-Area based control
Volume based control
Area based control - correct answer-The annual harvest is expressed in hectares to be
harvested
How do we decide how much we can log each year? - correct answer-Using the annual
allowable cut
What fundamental difference in approach should we be making with a timber based
(maximum sustainable timber yield) versus EBM (ecosystem based management) -
correct answer-
Describe the annual allowable cut and the equation used - correct answer-Ours is 1
ha/year (100ha/100yr). Its the maximum amount of timber that the chief forester
determines is reasonable to harvest from the TSA or TFL
AAC=total area of forest/rotation age (ha/yr)
Volume based control: What does it look at and what is it based on - correct answer-
Looks at what quantity of volume to harvest each year (cubic meters instead of
hectares)
Based on available timber volume at start and project growth rates (rotation age)
, Planning for the potential or actual supply of timber in BC considers key questions
including (5) - correct answer-what harvest levels are possible (What amount of area
can we cut each year)
When do bottlenecks occur (periods with shortages in timber supply) and how can we
remedy/minimize them
Whats the risk of natural disturbances that will reduce the amount of timber available
(fire, insects)
are we leaving enough forest structure to provide for wildlife and biodiversity
What is the social-political risk for different scenarios (Eg. if we cut less, will there be
unemployment?)
What are inputs/consideration for determining timber supply - correct answer-Define the
timber harvesting land base (which parts of BC are available)
Resource inventories (quantity trees on that land base)
Determine productivity of timber harvesting land base (how fast will trees regrow after)
Define what timber products we want (lumber, pulp, plywood)
Define silviculture treatments and schedules (how much do we invest into growing good
quality stands)
Define environmental and social objectives/rules affecting the harvest (how much will
other goals impact timber supply?)
Where do the social and environmental goals fit within this particular hierarchy and how
might this be different for EBM - correct answer-
Timber supply review: What is it based on and who determines the ACC - correct
answer-based on an updated review of each timber supply area and tree farm licences
The chief forester determines the allowable annual cut every 10 years
Onto SFM criteria:
what are some concerns leading the emergence of initiatives to develop criteria and
indicators of sustainable forest management - correct answer-growing evidence of
forest deterioration and decline globally
related concerns about sustainable supply of timber
