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Land Management and Conservation 14-3

Land Management and Conservation 14-3. 3/08. Keeping rural lands free from urbanization and in good shape is important because of the environmental services they provide. Farmland. US 100 billion hectares of prime farmland Much of it was at one time prairie or forest

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Land Management and Conservation 14-3

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  1. Land Management and Conservation 14-3 3/08

  2. Keeping rural lands free from urbanization and in good shape is important because of the environmental services they provide

  3. Farmland • US 100 billion hectares of prime farmland • Much of it was at one time prairie or forest • Threats – urban development and erosion

  4. Farmland Protection • 1996 Farmland Protection Program • Williamson Act – California 1965 specifies land as agricultural for less taxes

  5. Rangeland • Includes grassland, shrublands and deserts • Most commonly used for grazing

  6. Threats • Overgrazing • Results in erosion • Changes in the plant community • Desertification

  7. Conservation • Public Rangelands Improvement Act 1978

  8. Methods • Kill invasive plants • Plant Native species • Manage livestock • Provide for dispersed watering for livestock • Fence riparian areas

  9. Forest Lands • Provide Wood products and paper • Habitat for many species • Produce Oxygen and use carbon Dioxide

  10. Worldwide – 1800 cubic centimeters of wood used per day • In US almost 3.5 times that amount

  11. Classification of Forest Lands • Virgin forest – never cut

  12. Native Forest – Planted and Managed

  13. Tree Farms – Land cleared and trees planted in rows

  14. Harvesting Methods • Clear Cutting • Selective cutting

  15. Deforestation • Forest cleared to make farmland or to expand urbanization • Loss of habitat and erosion of soil Amazon deforestation

  16. Reforestation • Replanting of trees or allowing natural succession to take place

  17. Parks and Preserves • 1850 Yellowstone – first National Park

  18. In United States • National Parks • National Forests • National Wildlife Refuges • Bureau of Land Management • State Parks, Forests and Preserves • Private Conservancies

  19. Worldwide • United Nation – Man and the Biosphere Program • Set up hundreds of preserves worldwide – include people

  20. US Wilderness Act 1964 • Ecosystems protected from all exploitation • Benefits – species diversity • Recreation • Science

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