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Ch 14 How we use Land Active Reading Workbook, pages 71-72.

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Presentation on theme: "Ch 14 How we use Land Active Reading Workbook, pages 71-72."— Presentation transcript:

1 Ch 14 How we use Land Active Reading Workbook, pages 71-72

2 Environmental Science 3/21 Learning objectives: 1.I will be able to tell the difference between urban and rural land and give examples. 2.I will be able to describe 3 major ways humans use land. 3.I will be able to explain the concept of ecosystem services and how the U.S. compares with other countries.

3 Ch 14.1 How we use land pg 381How we use land Urban– over 50,000 Examples: Suburban—10,000 – 50,000 Examples: Rural–less than 10,000 Examples:

4 How do humans use land? Pg 381 Food and Supplies: Rangeland—% Cropland—% Forests—% Place to live: Urban land—% Pleasure: Parks and Preserves--%

5 When did urbanization occur? Why? Pg 9-11, 382 Hunter/gatherers: Agricultural revolution: Industrial revolution:

6 What are ecosystem services? Pg 383 Ecosystem services: How much rural land is needed to support each person in the United States? In Germany? In least developed countries? What factors determine the area of resources needed? –

7 Learning objectives revisited… 1.I will be able to tell the difference between urban and rural land and give examples. 2.I will be able to describe 3 major ways humans use land. 3.I will be able to explain the concept of ecosystem services and how the U.S. compares with other countries

8 Ch 14.1 How we use land Quick Quiz 14.1 – By yourself—without your neighbor—complete this quiz and turn it in.

9 Ch 14.2 Urban Land Use Active Reading Workbook, pgs 73-74

10 Ch 14.2 Urban Land Use pg I will be able to explain how urban sprawl affects the environment and give examples. 2.I will be able to explain the heat island effect and give examples. 3.I will be able to explain how urban planning deals with transportation and open space.

11 Ch 14.2 Urban Land Use pg 384 Urbanization? People move to the cities for Some metropolitan areas are

12 Ch 14.2 Urban Land Use p385 Infrastructure: Examples: Urban Crisis: Urban Crisis Urban sprawl:

13 Ch 14.2 Urban Land Use Learning objectives revisited 1.I will be able to explain how urban sprawl affects the environment and give examples. 2.I will be able to explain the heat island effect and give examples. 3.I will be able to explain how urban planning deals with transportation and open space.

14 Ch 14.3 Land Management Active Reading Workbook pgs 75-76

15 Ch 14.3 Land Management p I will be able to explain why it is necessary to preserve farmland. 2.I will be able to describe how rangeland should be managed to be sustainable. 3.I will be able to describe the types of tree cutting methods and how they impact the environment. 4.I will be able to describe the steps taken to protect parks and preserves and why.

16 Ch 14.3 Land Management p 389 What is farmland? In the U.S. ____________________ is available. Farmland is threatened by

17 Ch 14.3 Land Management p 390 Rangeland: Rangeland World population growth will require a ________ ___________ in food production from 1977 to __________. Problems: Solutions:

18 Ch 14.3 Land Management pg 391 Forest Lands: harvest trees The most important ecosystem service of the forest is _removal of CO2__. Harvesting trees: world wide average _1800cm3________ U.S. average _6300cm3______________ In developing countries _1.5______billion people use _fuelwood for _heating and __cooking____.

19 Ch 14.3 Land Management p methods of harvesting trees: 1.Clear cutting: cutting all trees Effects on environment: erosion, loss of habitat, 2.Selective cutting: cutting only mature trees Effects on environment: less devastating than clear cutting; more expensive

20 Ch 14.3 Land Management p Deforestation: removal of all the trees in an area Effects on environment: loss of habitat, soil erosion The rate of deforestation is highest in the ___tropical rain forest____ Reforestation : replanting all the trees Government actions: require timber companies to plant trees back after cutting

21 Ch 14.3 Land Management pg 395 Parks and Preserves: places for recreation, preserving wildlife Biosphere reserves: large areas around the world that are protected US Wilderness Act: 1964 designates land as wilderness areas. YELLOWSTONE, WYOMING & MONTANA Humans use wilderness areas for hiking, camping, fishing, Benefits: 1.Preserve wildlife habitats 2. Recreation 3. Education Threats 1.pollution 2. climate change

22 Ch 14.3 Land Management Learning objectives revisited 1.I will be able to explain why it is necessary to preserve farmland. 2.I will be able to describe how rangeland should be managed to be sustainable. 3.I will be able to describe the types of tree cutting methods and how they impact the environment. 4.I will be able to describe the steps taken to protect parks and preserves and why.


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