Essential Questions How does human activity affect the soil on the Earths surface How can humans conserve our soil Standards S6E5i Explain the effects of human activity on the erosion of the earths surface ID: 443884
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Slide1
Human Impact on SoilSlide2
Essential
Questions
:
How does human activity affect the soil on the Earth’s surface?
How can humans conserve our soil? Slide3
Standards
S6E5i. Explain the effects of human activity on the erosion of the earth’s surface.
S6E5j. Describe methods for conserving natural resources such as water, soil, and air.Slide4
What are some ways that humans negatively impact the Earth’s surface? Soil?
What are some examples that you have personally observed?Slide5
Human activities can increase soil erosion which washes away the nutrients that make soil fertileSlide6
Human Activities that Increase Soil Erosion:
Developing land for agriculture
Cutting down forests (deforestation) for logging or land development (business, industry, homes, etc.)
Overgrazing by cattle or livestockSlide7
Human activities can also increase pollutants that get
into soil. Slide8Slide9
What is conservation?
Conservation
The action of protecting or preserving somethingSlide10
Why is Conversation important?
The Earth’s resources can
be reduced or used up if humans don’t use conservation strategies.Slide11
Turn to an elbow partner and discuss how this video made you feel.
What questions/thoughts did this bring up in your mind?
Soil ConservationSlide12
Graphic Organizer: How can the following strategies help us conserve our soil?
terracing
contour plowing
strip planting
no-till farming
crop
rotation
cover crop
wind break
mulchingSlide13
Terracing:
make
sloping land
into
a
number of level flat areas resembling a series of steps.Slide14
Contour Plowing:
plowing that follows the curve of the land to slow water flow and save rich topsoilSlide15
Strip Planting:
alternates strips of plants to reduce erosion by creating natural dams for waterSlide16
No-Till Farming:
way of growing plants from year to year without disturbing
the soilSlide17
Crop Rotation:
changing of crops in a
sequence; it protects soil and decreases
the population level of
pestsSlide18
Cover Crop:
crop planted
mainly
to manage soil erosion, soil fertility, soil quality, water, weeds, pests,
and diseasesSlide19
Wind Break:
one or more rows of trees or shrubs planted
to
provide shelter from
wind erosionSlide20
Mulching:
a layer of material
put on the soil’s surface to maintain moisture and health of the soil, and reduce weeds