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Journey 2050 Lesson 5: Land Use | Self-Guided Experience

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    This is the Journey 2050
    self-guided experience
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    We are on lesson 5
    about land use.
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    So far in the program we have
    learned about soil, nutrients,
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    and the economy, and how those
    three factors can either support
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    sustainability or limit it. Today,
    we are going to be talking about land use
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    So, question for you: how much of the
    Earths surface is used for growing food?
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    If you take a look at the Earth,
    not every portion of it is a place
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    where we can grow food.
    There is a lot of water,
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    and it looks like a lot of places
    that are not ideal to grow food in.
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    To begin answering this question, I'm
    going to do a demonstration with
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    an apple. I want you to imagine that the
    surface of the Earth is the
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    surface of this Apple. I'm going to take
    this apple and quarter it which will
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    give us four pieces. With the apple
    cut in quarters I'm going to take
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    one of them away. The remaining three
    represent the portion of the Earth
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    Thats covered in water. I'm going to
    set aside the three pieces that represent
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    water on the Earth and pull back in the
    one quarter of the Apple that represents
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    the Earths surface that is land.
    Not all land is created equal.
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    So, I have cut this piece representing
    the land on the Earth into three pieces.
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    So, they represent 1/12 sections.
    So, 1/12 of our Earth is inhospitable land
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    This is places like polar regions, deserts
    and mountains where it's not suitable
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    to live or to grow crops.
    I am going to set that piece aside
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    and look at the next piece.
    This is habitable land.
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    This is places where people live
    but crops aren't grown.
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    So, think of places where houses are
    built, where there's roads and development
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    or public lands. This is another 1/12
    section of our Earth.
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    This last 1/12 section is Earths
    Agricultural land.
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    This is the place where our food
    is grown.
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    To dig a little bit deeper, I am
    going to cut this piece into four pieces.
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    3/4 of our agricultural land is land that
    is used to raise livestock or
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    to grow feed for livestock.
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    The remaining quarter of this piece
    which represents 1/48 of our earth
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    is agricultural land that grows food
    that humans eat.
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    So, this is fruits, vegetables, beans,
    rice, grains. Foods that are for
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    direct human consumption.
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    Here's a summary. So, if the
    entire apple was our Earth,
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    and the surface of it: 75% of the
    Earths surface is water.
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    25% of the Earths surface is land.
    If we divide the land, we have 1/12
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    section that is inhospitable land,
    1/12 section that is habitable land, but
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    covered in houses, roads,
    and open areas.
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    And the final 1/12 section is agricultural
    land that produces our food.
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    If we divide the agricultural land down
    3/4 of that is used for livestock, feed,
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    and grazing. That then the livestock
    produce meat, milk, and eggs.
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    And then 1/4 of that is land used for
    food crops.
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    This finishes up step one on your handout
    And here's another summary slide if
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    you need help filling out
    the percentages on your handout.
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    For step 2 on your handout,
    pause this video and watch the
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    land use video and answer the questions.
    We are moving on to Step 3 now.
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    This is a question I have for you that you
    should be able to start answering with
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    the information we have already been over
    but why is land a precious resource?
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    Just like water and soil nutrients that
    we've already talked about,
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    Land is also a limited natural resource
    that we have to provide for our needs.
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    Land also has a lot of uses and we have
    a lot of needs for land for different
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    reasons, we need land to build businesses
    and industry. We need land for recreation.
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    We need land for animal habitats, for
    homes an roads, for food.
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    So, land is a resource that is not only
    limited but it's needed for a large
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    variety of things.
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    This is a map that shows population
    statistics by country. If you look at
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    the legend, the darker the color the
    more people that live there.
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    So just take a few minutes and take a look
    at that. something that you should be
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    able to gather from that is that people
    typically live in the places where they
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    have the things they need to grow their
    food. So, things like fertile land
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    ideal crops, etc.
    So, thats one challenge that we face
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    in our land use and sustainability is that
    land that we want or are able to farm on
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    is also the land where people want to
    settle and live and build houses.
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    Before we move forward, I also want
    to go backwards back to this map
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    of the population statistics by country.
    Are these two maps correlated?
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    Do you see any similarities between the
    two maps that show population by country
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    as well as the agricultural land by
    country?
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    I'll show you the other one once more.
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    The answer is yes there is a correlation
    between agricultural and the places where
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    people live. Homes and businesses are very
    often built in the places that have the
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    best climate and soil for growing
    crops.
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    In summary best management practices
    innovation and technology is what helps
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    us only a fraction of the Earths surface
    to feed a growing population.
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    That wraps up step 3 of this lesson.
    We are going to move on to step 4
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    which is to play the next level of the
    game. As a heads up in this level you're
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    going to be seeing something different
    that what you have in the previous ones.
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    So, what you're going to be doing is
    making predictions for the percentage
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    of land used by nature, urban, and
    agriculture in the 1900's compared to
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    the year 2000. So, pause this video
    an then go to your game and play
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    level 5A and stop when you're done.
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    To summarize what we've been learning
    in the video and through this level of
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    the game, Farmers have increased yields
    of the food production by using better
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    practices, better science, better
    technology and the use of best management
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    practices is whats helping us be more
    sustainable in that process.
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    So, how do we improve our land use choices
    so that we can feed a growing world and
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    still have a high quality of life
    and environment?
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    Alright, we are going to go through
    a few examples.
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    In natural habitats we're going to replace
    what we use and keep the environment
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    clean, plant native species, remove
    invasive species and don't just talk
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    about stewardship, take action.
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    In agriculture we're going to improve
    soil health, so hat we can grow more on
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    the same amount of land, we're going to
    use technology to make more efficient
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    use of out inputs like water and
    fertilizer. We're also going to
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    sustainable use the land that
    is already in production .
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    In an urban setting we're going to retain
    the urban wetlands and riparian areas
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    We're going to reduce food waste and only
    buy what we need to eat. We're also going
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    to build businesses up and not out to
    perserve the land we have.
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    We're almost done here on this lesson.
    What you're going to do now is review the
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    key points these are also printed on
    your handout.
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    Listed as an aditional activity to this
    lesson is to play the 5B level of the game
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    This is a world geography game. Its a Q&A
    style game that has clues imbedded in the
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    questions. You're going to think of your
    favorite foods and sports
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    and music and travel places and
    relate them to the cultures and different
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    counties. You're going to explore some of
    the favorite things and where they come
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    from, and how trading goods from around
    the world allows us to enjoy those things.
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    This wraps up lesson 5 on land use.
    Up next is lesson 6 on careers.
Title:
Journey 2050 Lesson 5: Land Use | Self-Guided Experience
Description:

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Video Language:
English
Duration:
09:38

English subtitles

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