Landscape development environmental change
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Landscape Development & Environmental Change. Landscapes : the features of Earth’s surface Stream Drainage : the shape of the stream in an area . Mountains, Plateaus, & Plains. Based on gradient, elevation, & rock structure.

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Landscape Development & Environmental Change

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Landscape development environmental change

Landscape Development & Environmental Change


Landscape development environmental change

  • Landscapes: the features of Earth’s surface

  • Stream Drainage: the shape of the stream in an area


Mountains plateaus plains

Mountains, Plateaus, & Plains

  • Based on gradient, elevation, & rock structure.

  • Mountains: high elevation, steep gradient, and distorted rock structures.

Adirondack Mountains, NY


Mountains plateaus plains1

Mountains, Plateaus, & Plains

  • Plateaus: high elevation, flat slope, undistorted horizontal rock structure.


Mountains plateaus plains2

Mountains, Plateaus, & Plains

  • Plains: low elevation, flat surface, usually sedimentary rocks


Landform regions of the unites states

Landform Regions of the Unites States


Factors of landscape development

Factors of Landscape Development

  • Uplifting forcesand leveling forcescan form and change landscapes.

    • Impact events can also change landscapes.

  • Sources of energy:

    • Uplifting: heat from Earth’s interior / mantle convection

    • Leveling: insolation & gravity


Time landscape changes

Time & Landscape Changes

  • Landscape features depend on the length of time that uplifting and leveling forces have acted on the rocks.

  • Dynamic Equilibrium: at any one time, landscape features reflect a state of balance.


Climate and landscape development

Climate and Landscape Development

  • Landscapes are influenced by:

    • Temperature

    • Moisture

  • Arid Climates

    • Steep slopes, and sharp, angular landscape features.

    • Sandblasted features

  • Humid Climates

    • More rounded, smooth landscape features


Landscape development environmental change

Arid climate

Humid climate


Climate and landscape development1

Climate and Landscape Development

  • Recent Glaciation Landscape Features:

    • Mountaintops with little soil

    • Widespread transported soil

    • Unsorted soil

    • Wide, U-shaped valleys

    • Many lakes

    • Parallel grooves in bedrock

    • Many small hills (drumlins, etc.)


Climate and landscape development2

Climate and Landscape Development

  • Soil and Climate:

    • Soils in arid regions are thin/nonexistent, sandy, and contain many minerals.

These trees are growing in an arid climate.


Bedrock

Bedrock

  • The composition and structure of bedrock can affect the landscape in a region.

  • Rock types and hill slopes:

    • Structural Features: folds, faults, etc. can lead to many changes in landscape features in an area.

    • Streams: the direction, drainage pattern, features, and gradient of a stream are directly related to bedrock.


Bedrock1

Bedrock

  • Rock types and hill slopes:

    3. Soils: differences in soil composition are due to differences in underlying bedrock.


Effect of landscapes on people

Effect of Landscapes ON People

  • Streams and Rivers

    • Dangerous flooding

  • Ocean shores

    • Dangerous flooding, hurricanes, rise in sea level

  • Clay-rich areas

    • Slow mass movement; landslides, liquefaction during earthquakes

  • Dangers can be reduced with proper planning, laws, and zoning limitations.


Changes of landscapes by people

Changes of Landscapes BY People

  • Humans have GREATLY affected the environment:


Changes of landscapes by people1

Changes of Landscapes BY People

  • Human population increasing RAPIDLY

    • Landscape pollution is HIGHEST in areas with HIGH population density.


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