15: Forestry and Forest Products Flashcards
Two Primary Wood Uses Globally
Fuelwood → Mostly non-coniferous (deciduous) trees.
Sawlogs → Largely coniferous trees (e.g., pine, fir).
Logging vs Forestry
Logging = Cutting trees.
Forestry = Managing the whole forest system (planning, sustainability, replanting, etc.).
Eastern White Pine Features
Tall, straight, few branches, soft but strong wood = ideal for shipbuilding.
Historical Significance of lumbar?
British Royal Navy claimed big white pines → Colonial resentment → Early tensions before revolution.
Conservation Movement (White Pines)
Grew in the 1800s with recreation + concern for nature.
Yellowstone (1872) and Adirondack Park (1892) were early milestones.
Forest Disturbance Regime
Small-scale (e.g., single treefall) → uneven-aged forests, shade-tolerant species.
Large-scale (e.g., fire) → even-aged forests, shade-intolerant species.
Wood Pellet Production
Steps:
Chip → Grind → Compress → Heat melts lignin, which binds the pellets.
Indigenous Stewardship vs Colonial Logging
Indigenous: Holistic, spiritual, sustainable.
Colonial: Resource extraction, commercial, often short-sighted.
Natural Disturbance Silviculture (NDS)
Mimics natural patterns → supports biodiversity and ecosystem health.
Tree Mortality is dependant on what?
Density-dependent: Competition (light, water, nutrients).
Density-independent: Weather, disease, fire.
Human-Forest Relationship
Start with colonial exploitation (e.g., Eastern White Pine for the Navy).
Shift to conservation (late 1800s) → modern forestry: NDS, reforestation, sustainability.
Include social shifts: Indigenous rights, eco-tourism, carbon credits.
Natural Disturbance Silviculture (NDS) Pros and Cons ?
Pros: Maintains biodiversity, mimics nature, resilient forests.
Cons: Can be more complex and costly than plantations.
Decay, Disturbance & Regeneration (Logging)
Decay = habitat, nutrients.
Disturbance = creates new niches.
Regeneration = new growth, succession.
Human role: Logging mimics or disrupts these cycles, depending on method used.