CH 6-9 Flashcards

1
Q

Deforestation

A

The removal of trees or forest for human developement.

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2
Q

Africa

A

The area with the highest rate of forest loss.

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3
Q

Closed Canopy Forest

A

Forest where trees’ crowns cover most of the ground.

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4
Q

Old Growth Forests

A

Forests that have been undisturbed by humans.

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5
Q

Pulpwood

A

Fastest growing forest product.

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6
Q

Agriculture

A

The main reason for deforestation in Western Africa and Southeast Asia.

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7
Q

Debt for Nature Swaps

A

When a conservation group buys a country’s debt in exchange for the country restoring and protecting natural areas.

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8
Q

Monoculture Forestry

A

Single species, single use intensive cropping.

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9
Q

Clear Cutting

A

Cutting down all the trees in an area.

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10
Q

Shelterwood Harvesting

A

Mature trees are removed in a series of two or more cuts.

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11
Q

Strip Cutting

A

All trees in a narrow pathway are cleared, then reseeded by surrounding trees.

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12
Q

Selective Cutting

A

Only a small percentage of mature trees are cut in 10-20 year rotation.

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13
Q

Desertification

A

The expansion of deserts.

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14
Q

Pastoralists

A

People who live by herding animals.

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15
Q

Cow Welfare

A

Government loses $47 million annually leasing land for grazing.

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16
Q

Rotational Grazing

A

Confining animals to a small area for a short time, then moving to a new area (similar to animals in nature).

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17
Q

African Sahel

A

Environmentally fragile area south of the Sahara Desert.

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18
Q

Yellowstone

A

1st national park on earth.

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19
Q

Banff National Park

A

1st national park in Canada, est. 1887.

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20
Q

Mt. Mitchell

A

Tallest mountain in the Appalachians; tree tops killed by acid rain.

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21
Q

Acadia National Park

A

Park in Maine; summer air 50% above safe level.

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22
Q

Corridors

A

Walkways built over highways for animals.

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23
Q

Ecotourism

A

A combination of adventure travel and nature appreciation in wild places.

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24
Q

Coral Reefs

A

Most threatened marine ecosystem.

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25
Q

Poaching

A

Large animal problem in Africa.

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26
Q

Transgenic Crops/GMOs

A

Crops that have undergone gene splicing through genetic engineering.

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27
Q

Frankenstein Foods

A

What Europeans call US genetically altered foods.

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28
Q

Poverty

A

The greatest threat to food security.

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29
Q

Food Security

A

The ability to obtain food on a day-to-day basis.

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30
Q

Meat

A

A food that is expensive to produce, making it a good indicator of wealth.

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31
Q

India

A

The largest hungry nation on earth.

32
Q

Central Africa

A

Region with highest percent of hungry people.

33
Q

Nigeria

A

Country where home gardens on 2% of cropland produce 50% of food families eat.

34
Q

Famine

A

Large scale food shortages, massive starvation, social disruptions, economic chaos.

35
Q

Politics, Environmental Conditions, Economics

A

Three reasons why the UN reports 60 million people in 30 nations needed emergency food.

36
Q

Political oppression and armed conflict

A

Two factors almost always at the root of a famine.

37
Q

Free press

A

No democratic with one has ever had a major famine.

38
Q

Malnourishment

A

A nutritional imbalance caused by improper diet.

39
Q

Anemia

A

Most common nutritional problem in the world. Occurs due to low iron levels.

40
Q

Vitamin A Deficiency

A

Nutritional problem causing 350,000 to go blind and 1 million to die annually. Affects 100-140 million children at any given time.

41
Q

Kwashiorkor

A

Illness characterized by swollen belly, lack of protein, reddish orange hair.

42
Q

Marasmus

A

Greek for “to waste away”; child shrivels up like old starving person.

43
Q

International Financial Speculation & Biofuel Production

A

Two new causes for world hunger.

44
Q

Heavy subsidies

A

Government support for growing and processing crops for biofuels. Without them, biofuels are not viable.

45
Q

Intensive subsistence agriculture

A

Growing rice in China; using land to the maximum and just barely getting by.

46
Q

Extensive subsistence agriculture

A

Lapps herding reindeer; using the natural bounty of the land to just barely get by.

47
Q

Intensive commercial agriculture

A

A Midwestern feedlot; using land to maximum capacity to make money.

48
Q

Extensive commercial agriculture

A

Wheat farming on the Great Plains, Pampas, Ukraine; using what grows naturally to make money.

49
Q

E-COLI 0157-H7

A

Disease which 25% of all US cattle have. It only takes 2 or 3 cells to kill a person.

50
Q

Locavore

A

A person who consumers locally produced food.

51
Q

Tragedy of the Commons

A

What happens when a resource is not regulated, people take until the resource is gone.

52
Q

Pedology

A

The study of soils.

53
Q

Soil profile

A

A cross section of soil.

54
Q

Soil horizon

A

A layer in the soil profile.

55
Q

Pedon

A

1 to 10 sq meter cross section of soil from the surface to the bedrock.

56
Q

Humus

A

A mixture of decomposed organic materials, dark in color.

57
Q

Leaching

A

Organic water-soluble particles are carried by water to lower level in the soil profile.

58
Q

Eluviation

A

Non-water-soluble particles are carried by water to a lower level in the soil profile.

59
Q

7th approximation system

A

US Soil Conservation Service’s soil classification system

60
Q

Podzolization

A

Soil formation in cool, wet areas, slow bacterial decay, layer of pine needles and leaves on the surface, forms and acid soil, leaching and eluviation present.

61
Q

Calcification

A

Soil formation in dry land, rich in humus, little leaching and eluviation, great farmland

62
Q

Laterization

A

Soil formation in hot, wet areas, heavily leached and eluviated, infertile soil, porous, red due to oxidation of iron in the soil.

63
Q

Gleization

A

Soil formation in cold, wet climates with poor drainage conditions, accumulation of humus above water-saturated gray layer of clay.

64
Q

Oxisols

A

Tropical soils

65
Q

Histosols

A

Organic soils

66
Q

Spodosols

A

Northern pine forest soils

67
Q

Andisols

A

Volcanic soils

68
Q

Aridisols

A

Desert soils

69
Q

Alfisols

A

Moderately weathered forest soils

70
Q

Ultisols

A

Heavily weathered forest soils

71
Q

Mollisols

A

Grassland soils

72
Q

Entisols

A

Recent undeveloped soils

73
Q

Inceptisols

A

Weakly developed soils

74
Q

Gelisols

A

Cold frozen soils

75
Q

Vertisols

A

Expandable clay soils