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Published byJody Hawkins Modified over 9 years ago
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History of Forest Management in U.S.
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Distribution of National Forest Lands - Diversity of Forest Types in U.S. - East to West, North to South
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Distribution of National Park & Monument Lands
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Lower Peninsula
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Upper Peninsula
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Pigeon River
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Ownership of Forestlands In U.S.: Private = 58% = 100 M ha (250 M A) Forest Industry = 14% = 24 M ha National Forest = 18% = 31 M ha NPS, other = 10% = 17 M ha U.S. Forest Service (USDA) 1) administer national forest lans 2) research 3) state-level cooperation * Use multiple-use approach & sustainable yield model
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Sustained yield concept dependent on: Distribution of age classes Length of rotation (harvest cycle) Reason for harvest (tree species) pulpwood vs. sawlogs
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Forest Products
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Artificial Regeneration
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Site Index: characterize quality of stand = size of tree after 50 years (100 years in some parts of U.S.) > Site index = better quality stand * Based on red oak
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Even vs. Uneven Stands
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Disturbance Regimes
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Even-Age Management
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Controversy of Clearcuts Pros = early successional habitat, quick, $$, tree-specific Cons = erosion, edge effects, aesthetics, reduce diversity
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Clearcuts and National Forest Management
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Patch Clearcuts
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Disturbance Regimes in Forest Landscapes
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Patch Clearcuts Simulating Natural Disturbance
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Strip Cutting
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Strip-Cutting vs. Seed Tree Cuts
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Group Selection
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Single-Tree Selection
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Unsustainable Demand for Wood Products
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Distribution of Tropical Forests
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Tropical Forests Approximately 70% of life on Earth Huge diversity / small population size Approximately 50% already harvested….Amazon, Indonesia
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Tropical Forests Slash-and-burn agriculture, cattle ranching, logging (teak, mahogany)
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Tropical Forests Chico Mendes & rubber tappers – organize reserves for nontimber products Murdered in 1988 “At first I thought I was fighting to save rubber trees, then I thought I was fighting to save the Amazon rainforest. Now I realise I am fighting for humanity.”
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Forest Certification Forest Stewardship Council (FSC) – international certification that timber harvested in ecologically, socially, and economically sound manner
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Forest Stewardship Council (FSC) Members = foresters, timber traders, retailers, environmental groups, indigenous peoples Forest mgt certification = examine forestry operations Forest product certification = tracking the history of a wood product
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