Journey 2050 Lesson 5: Land Use | Self-Guided Experience
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0:11 - 0:14This is the Journey 2050
self-guided experience -
0:15 - 0:19We are on lesson 5
about land use. -
0:21 - 0:25So far in the program we have
learned about soil, nutrients, -
Not Syncedand the economy, and how those
three factors can either support -
Not Syncedsustainability or limit it. Today,
we are going to be talking about land use -
Not SyncedSo, question for you: how much of the
Earths surface is used for growing food? -
Not SyncedIf you take a look at the Earth,
not every portion of it is a place -
Not Syncedwhere we can grow food.
There is a lot of water, -
Not Syncedand it looks like a lot of places
that are not ideal to grow food in. -
Not SyncedTo begin answering this question, I'm
going to do a demonstration with -
Not Syncedan apple. I want you to imagine that the
surface of the Earth is the -
Not Syncedsurface of this Apple. I'm going to take
this apple and quarter it which will -
Not Syncedgive us four pieces. With the apple
cut in quarters I'm going to take -
Not Syncedone of them away. The remaining three
represent the portion of the Earth -
Not SyncedThats covered in water. I'm going to
set aside the three pieces that represent -
Not Syncedwater on the Earth and pull back in the
one quarter of the Apple that represents -
Not Syncedthe Earths surface that is land.
Not all land is created equal. -
Not SyncedSo, I have cut this piece representing
the land on the Earth into three pieces. -
Not SyncedSo, they represent 1/12 sections.
So, 1/12 of our Earth is inhospitable land -
Not SyncedThis is places like polar regions, deserts
and mountains where it's not suitable -
Not Syncedto live or to grow crops.
I am going to set that piece aside -
Not Syncedand look at the next piece.
This is habitable land. -
Not SyncedThis is places where people live
but crops aren't grown. -
Not SyncedSo, think of places where houses are
built, where there's roads and development -
Not Syncedor public lands. This is another 1/12
section of our Earth. -
Not SyncedThis last 1/12 section is Earths
Agricultural land. -
Not SyncedThis is the place where our food
is grown. -
Not SyncedTo dig a little bit deeper, I am
going to cut this piece into four pieces. -
Not Synced3/4 of our agricultural land is land that
is used to raise livestock or -
Not Syncedto grow feed for livestock.
-
Not SyncedThe remaining quarter of this piece
which represents 1/48 of our earth -
Not Syncedis agricultural land that grows food
that humans eat. -
Not SyncedSo, this is fruits, vegetables, beans,
rice, grains. Foods that are for -
Not Synceddirect human consumption.
-
Not SyncedHere's a summary. So, if the
entire apple was our Earth, -
Not Syncedand the surface of it: 75% of the
Earths surface is water. -
Not Synced25% of the Earths surface is land.
If we divide the land, we have 1/12 -
Not Syncedsection that is inhospitable land,
1/12 section that is habitable land, but -
Not Syncedcovered in houses, roads,
and open areas. -
Not SyncedAnd the final 1/12 section is agricultural
land that produces our food. -
Not SyncedIf we divide the agricultural land down
3/4 of that is used for livestock, feed, -
Not Syncedand grazing. That then the livestock
produce meat, milk, and eggs. -
Not SyncedAnd then 1/4 of that is land used for
food crops. -
Not SyncedThis finishes up step one on your handout
And here's another summary slide if -
Not Syncedyou need help filling out
the percentages on your handout. -
Not SyncedFor step 2 on your handout,
pause this video and watch the -
Not Syncedland use video and answer the questions.
We are moving on to Step 3 now. -
Not SyncedThis is a question I have for you that you
should be able to start answering with -
Not Syncedthe information we have already been over
but why is land a precious resource? -
Not SyncedJust like water and soil nutrients that
we've already talked about, -
Not SyncedLand is also a limited natural resource
that we have to provide for our needs. -
Not SyncedLand also has a lot of uses and we have
a lot of needs for land for different -
Not Syncedreasons, we need land to build businesses
and industry. We need land for recreation. -
Not SyncedWe need land for animal habitats, for
homes an roads, for food. -
Not SyncedSo, land is a resource that is not only
limited but it's needed for a large -
Not Syncedvariety of things.
-
Not SyncedThis is a map that shows population
statistics by country. If you look at -
Not Syncedthe legend, the darker the color the
more people that live there. -
Not SyncedSo just take a few minutes and take a look
at that. something that you should be -
Not Syncedable to gather from that is that people
typically live in the places where they -
Not Syncedhave the things they need to grow their
food. So, things like fertile land -
Not Syncedideal crops, etc.
So, thats one challenge that we face -
Not Syncedin our land use and sustainability is that
land that we want or are able to farm on -
Not Syncedis also the land where people want to
settle and live and build houses. -
Not SyncedBefore we move forward, I also want
to go backwards back to this map -
Not Syncedof the population statistics by country.
Are these two maps correlated? -
Not SyncedDo you see any similarities between the
two maps that show population by country -
Not Syncedas well as the agricultural land by
country? -
Not SyncedI'll show you the other one once more.
-
Not SyncedThe answer is yes there is a correlation
between agricultural and the places where -
Not Syncedpeople live. Homes and businesses are very
often built in the places that have the -
Not Syncedbest climate and soil for growing
crops. -
Not SyncedIn summary best management practices
innovation and technology is what helps -
Not Syncedus only a fraction of the Earths surface
to feed a growing population. -
Not SyncedThat wraps up step 3 of this lesson.
We are going to move on to step 4 -
Not Syncedwhich is to play the next level of the
game. As a heads up in this level you're -
Not Syncedgoing to be seeing something different
that what you have in the previous ones. -
Not SyncedSo, what you're going to be doing is
making predictions for the percentage -
Not Syncedof land used by nature, urban, and
agriculture in the 1900's compared to -
Not Syncedthe year 2000. So, pause this video
an then go to your game and play -
Not Syncedlevel 5A and stop when you're done.
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Not SyncedTo summarize what we've been learning
in the video and through this level of -
Not Syncedthe game, Farmers have increased yields
of the food production by using better -
Not Syncedpractices, better science, better
technology and the use of best management -
Not Syncedpractices is whats helping us be more
sustainable in that process. -
Not SyncedSo, how do we improve our land use choices
so that we can feed a growing world and -
Not Syncedstill have a high quality of life
and environment? -
Not SyncedAlright, we are going to go through
a few examples. -
Not SyncedIn natural habitats we're going to replace
what we use and keep the environment -
Not Syncedclean, plant native species, remove
invasive species and don't just talk -
Not Syncedabout stewardship, take action.
-
Not SyncedIn agriculture we're going to improve
soil health, so hat we can grow more on -
Not Syncedthe same amount of land, we're going to
use technology to make more efficient -
Not Synceduse of out inputs like water and
fertilizer. We're also going to -
Not Syncedsustainable use the land that
is already in production . -
Not SyncedIn an urban setting we're going to retain
the urban wetlands and riparian areas -
Not SyncedWe're going to reduce food waste and only
buy what we need to eat. We're also going -
Not Syncedto build businesses up and not out to
perserve the land we have. -
Not SyncedWe're almost done here on this lesson.
What you're going to do now is review the -
Not Syncedkey points these are also printed on
your handout. -
Not SyncedListed as an aditional activity to this
lesson is to play the 5B level of the game -
Not SyncedThis is a world geography game. Its a Q&A
style game that has clues imbedded in the -
Not Syncedquestions. You're going to think of your
favorite foods and sports -
Not Syncedand music and travel places and
relate them to the cultures and different -
Not Syncedcounties. You're going to explore some of
the favorite things and where they come -
Not Syncedfrom, and how trading goods from around
the world allows us to enjoy those things. -
Not SyncedThis wraps up lesson 5 on land use.
Up next is lesson 6 on careers.
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