1. LandSection 3 Section 3: Land Management and Conservation Preview Bellringer Objectives Land Management Farmlands Rangelands Problems on the Range Maintaining the Range Forest Lands

2. LandSection 3 Section 3: Land Management and Conservation Preview, continued Harvesting Trees Deforestation Reforestation Parks and Preserves Wilderness Benefits of Protected Areas Threats to Protected Areas

3. LandSection 3 Bellringer

4. LandSection 3 Objectives Explain the benefits of preserving farmland. Describe two ways that rangeland can be managed sustainably. Describe the environmental effects of deforestation. Explain the function of parks and of wilderness areas.

5. LandSection 3 Warm Up Mar. 13 What is GIS used for? Why is mass transit good for the environment? What is open space used for?

6. LandSection 3 Land Management The main categories of rural land are farmland, rangeland, forest land, national and state parks, and wilderness. sustainably they will provide resources indefinitely. We have also sometimes We also reduced their productivity by overusing or polluting them.

7. LandSection 3 Farmlands Farmland is land that is used to grow crops and fruit. The U.S. contains more than 100 million hectares of prime farmland. In 1996, the U.S. government established a national Farmland Protection Program.

8. LandSection 3 Rangelands Land that supports different vegetation, but not used for farming or timber production. The most common human use of rangeland is for the grazing of livestock.

9. LandSection 3 Rangelands World population growth may require a 40 percent increase in the food production of rangeland from 1977 to 2030.

10. LandSection 3 Problems on the Range Overgrazing is the depletion of vegetation due to the continuous feeding of too many animals. Less desirable plants may invade the area and replace more-desirable plant species.

11. LandSection 3 Maintaining the Range The Public Rangelands Improvement Act of 1978 was enacted to reverse this trend and improve land management practices. Reducing overgrazing by limiting herds to sizes that do not degrade the land.

12. LandSection 3 Maintaining the Range Improving rangeland killing invasive plants, planting native vegetation, and fencing areas to let vegetation recover

13. LandSection 3 Warm Up Mar. 17 What is the difference between rangelands and farm lands? How will urbanization affect farmlands?

14. LandSection 3 Warm Up Mar. 14 What are rangelands used for? What are two ways to improve rangelands? What is overgrazing?

15. LandSection 3 Forest Lands Trees are harvested to provide products we use everyday, such as paper, furniture, and lumber and plywood for our homes. One of the most important is the removal of CO 2 from the air.

16. LandSection 3 Harvesting Trees The worldwide average is 1,800 cm 3 of wood used per person each day. However, on average, each person in the United states uses about 3.5 times this amount.

17. LandSection 3 Harvesting Trees Three categories: Virgin forests: forests that have never been cut. Native forests: forests that are planted and managed. Tree farms: areas where trees are planted in rows and harvested like other crops.

18. LandSection 3

19. LandSection 3 Harvesting Trees Clear-cutting is the process of removing all of the trees from and area of land. Selective cutting is the process of cutting and removing only middle-aged or mature trees. More expensive, much less destructive.

20. LandSection 3 Mar. 18 What is the difference between clear cutting and selective? What is the number 1 resource pulled from forest land? What are two types of forest?

21. LandSection 3 Harvesting Trees

22. LandSection 3 Deforestation Deforestation is the process of clearing forests. Forests are cleared to convert the land into farmland, and to make space for roads, homes, factories, and office buildings. Deforestation reduces wildlife habitat, but it has other impacts, too.

23. LandSection 3 Reforestation Reforestation is the reestablishment and development of trees in a forest land.

24. LandSection 3 Parks and Preserves In the 1870s, congress agreed to protect this land by setting it aside for the public to use and enjoy, and the first national park, Yellowstone, was created. Today, the U.S. has about 50 national parks.

25. LandSection 3 Parks and Preserves

26. LandSection 3 Parks and Preserves Most public lands are not as protected as the national parks are. Some public lands are leased to private companies for logging, mining, and ranching. Others are maintained for hunting, fishing, wild-life refuges, or to protect endangered species.

27. LandSection 3 Parks and Preserves

28. LandSection 3 Wilderness The U.S. Wilderness Act, passed in 1964, designated certain lands as wilderness areas. Wilderness is a region that is not cultivated and that is not inhabited by humans. 32 million acres have been designated as wilderness in the United States. These areas are open to hiking, fishing, and camping.

29. LandSection 3 Threats to Protects Areas Litter and traffic jams now plague many of our national parks. Air and water pollution, Climate change Businesses being built near park.

30. LandSection 3 Fragmentation Process of land being broken into separate parts. –Roadways –Dams –Urban areas

31. LandSection 3 Warm Up Mar. 19 What was the first National Park? What is the wilderness? What is reforestation?

32. LandSection 3 Graphic Organizer

33. LandSection 3 Quick LAB