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Forestry and Rangelands. Hunter Kilborn and Bhakta. Ecological Services. Provide habitats Carbon Sinks Affect local climate Purify air and water Reduce soil erosion Provide energy and nutrient cycle. Old-Growth Forests. Old to Middle-aged trees Minimal human activity Multi-layer canopy
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Forestry and Rangelands Hunter Kilborn and Bhakta
Ecological Services • Provide habitats • Carbon Sinks • Affect local climate • Purify air and water • Reduce soil erosion • Provide energy and nutrient cycle
Old-Growth Forests • Old to Middle-aged trees • Minimal human activity • Multi-layer canopy • Fungal ecosystem • Indicator species • Healthy soil
Fires • Help clean the forest of leaf litter • Improve soil health • Surface Fires clear leaf litter, kill seedlings, and undergrowth. • Ground fires are hard to detect. • Crown Fires happen when there hasn’t been fires in a long time. Super hot and destroy the forest.
Deforestation • Selective-cutting- Cutting certain trees in an area. • Strip-cutting- cutting a strip of trees out of a forest. • Clear-cutting- Clearing the forest or a large area of the forest.
Rangelands • Problems: Overgrazing, desertification. • Overgrazing- the over use of rangelands as a source of food for steer and cattle. • Desertification- result of abuse of the land from multiple causes. Results in increased soil erosion and decreased fertility.
Fun Facts • Rangelands are 40% of the United States landmass. • 80% of the western US are rangelands. • Mostly arid to semi-arid climates. • Only 7% of the east coast are rangelands. • Regulated and controlled by the Bureau of Land Management (BLM), and the Forest Service.
Video Clip • http://www.youtube.com/watch?v=Kaeyr5-O2eU
External Links • American Forests | American Forests • Society for Range Management