Have you ever wondered what it really takes to make a delicious burger? I mean yeah'; the beef comes from a cow but that needs space to graze and the bun is made of wheat which grows in wide-open fields and the salad has grown in a dedicated farm. Before they all come together and meet their destiny' my mouth, all that food-growing space adds up.
So, it begs
the question. How much space does each of us need to feed ourselves for a whole
year? What's the food footprint of the average person?
Hold on to
you're hats because it is about to get messy in here. On average, each human on
the planet eats nearly 2 kilograms of food every day. Now of course this
varies across the world, with the Japanese eating just over 1.6 kilograms
and people from the US polishing off nearly 3 kilograms. But I'm going to have to deal with a lot of averages in this article, and the average overall
daily food consumption is around 2 kilos.
Now that 2
kilos are made up of all the basic food groups: grains, meat, veggies,
and dairy as well as our daily indulgences of sugar and alcohol.
Over a whole
year, we can get through an astounding amount of stuff. We'll drink around 90
liters of milk consumed nearly 64 kilos of potatoes and those occasional
sweet treats. They add up to 29 kilos of sugar a year. That is roughly the
weight of a nine-year-old.
All the food
that goes down our collective hatches has to be grown or raised on the land. So,
how much space does it actually need?
Well, when
working it all out it's important to take note of the yield of each particular
foodstuff. That's basically how much produce you get out of each patch of the
land and it can vary massively depending on what you're growing, and how good
you are at growing it, and where in the world you're doing you're growing, an
example when it comes to fulfilling our sugar cravings we can either use sugar
cane or sugar beet, though if you opt for sugar cane a square
meter of growing space will give you 65 grams of sugar the same area growing
sugar beet will reduce one kilo of the sweet stuff. The yield from sugar
beet is more than 15 times greater than sugar cane. In the calculations
coming up, I have taken some of the highest-yielding crops we use to fulfill
our daily diet. So what I'm giving you is our minimum food footprint.
That in
itself is fraught with problems, but I'll come back to that. All right are we
ready to dive in, here we go, to make the big numbers easier to visualize I'm
going to say in that Universal measure of area D 15 square meter American
parking space.
The average a person eats around 175 (hundred and seventy-five) eggs a year, a hen can
lay twice that amount so one Hen will do for two people. Welfare
specialists say she needs at least a square meter, so that makes for half
a square meter per person.
Milk comes from cows. We drink 90
liters of milk a year but Daisy cow can produce nearly 8,000
liters a year, meaning one cow can serve 88 people. So, dividing the
6000 square meters that one cow needs by 88 gives
an area equivalent to 4.5 (four and a half parking spaces). Unbelievably
beef also comes from cows, who knew Daisy’s boyfriend can
feed 20 people with roughly 200 kilograms per year of meat
from his body. So each person is responsible for 300 square meters
of his grazing area, which’s the same as 20 parking spaces.
Pork products account for over 15
kilos of our annual eating and one Pig can provide for four people. So,
a quarter of that area total is just 2.5 (two and a half square
meters).
Chickens have a lot less meat on them, and it
takes about 15 little cluckers to meet our annual poultry needs. These
guys together need an area equivalent to one parking space.
Next up seafood.
This is a tricky one an average version of us eats nearly 20 kilos of
it over the year, but yields very massively if you fancy prawns and that would
take a water area of over 3,000 square meters, but if you could settle
for the grass carp. The most commonly farmed fish, then a water area
off just 3/4 of a square meter would suffice. Now, because I’m
calculating the minimum food footprint. We’re going to go for grass carp,
whatever that tastes like, fishy; I guess.
We eat seven
kilos of pulses like lentils and beans. It’s an allotment
favorite because the yield of beans is quite high: you only need one
and a quarter parking spaces to meet your pulse quota.
We’ve already
said about sugar-taking beat as the highest-yielding sugar crop. You’d
need nearly two parking spaces worth to satisfy your sweet tooth over
the year.
Next up is oils,
among your sunflowers, and your olives, and your ground nuts.
One of the highest-yielding plant oils is coconut, but you’d still need five
parking spaces of coconut trees to make the 19 kilos of oil
that we consume each year. Anyone else feeling a bit greasy.
While Ron
liquids our annual alcohol consumption averages roughly 40 liters per year.
The space you need depends on your tipple of choice. Making this much wine
takes five parking spaces worth, roughly two square meters per bottle.
Clear spirits like vodka are made from a mash of grain, and it would
take only three parking spaces of wheat to make enough for the year.
So, for our minimum
alcohol footprint, we’re going to stick to the hard stuff. Grains like rice,
wheat, and maize, make up more than 20% of our diets, and
in total, you need to dedicate an area of a hundred and ninety-five square
meters that’s equivalent to 13 parking spaces to these cereals. To grow
the 64 kilos of potatoes and other starchy vegetables, we need in
a year; you need just one extra parking space. Potatoes for the
win.
Yields of
another veg varies as well if you are happy to only eat tomatoes which I
should add would not be a good plan. Then the area needed to grow 136 kilos
of them for the year is just two-and-a-half parking spaces.
And finally,
fruits. Bananas are some of the most widely consumed fruits in the world,
so if your annual fruit quota was May entirely bananas you'd need just
one parking space on the plantation. We got there.
So, in total
your personal homestead adds up to just over eight hundred and twenty square
meters, which’s equivalent to a respectable car park of 55 parking spaces
multiply this by these seven and a half billion people currently on the
planet and you need an area of at least the size of the Amazon rainforest
or 23 times the size of the UK, to meet all of our nutritional needs.
Interestingly
about half of that is crops the other half animals. Although Daisy
and her boyfriend occupy more than 90% (ninety percent) of the animal
half.
Now, these numbers are all well and good in theory, but in reality, there’s a lot of assumptions and generalizations that mean you can’t just turf over the nearest supermarket car park, you can’t for instance. Just fence off an 88th of the space that a dairy cow needs in the hope that like Schrodinger’s cow shall occupy yours and your neighbor’s gardens all at once. Yields also depend on economies of scale. The highest crop yields depend on large-scale commercial farming practices and vast processing facilities that simply aren’t practical for the backyard gardener, and don’t forget the problem of growing coconuts, bananas, and rice and a potentially unsuitable climate and the need to replenish, and revitalize the soil, and the long time the for certain plants reach productive maturity and the food that needs to be grown to feed Daisy and her boyfriend, and yes this is a very rough conservative estimate, but it does at least give an idea of the demand our eating habits are putting on the land with nearly half of that required land dedicated to pastoral farming. You might wonder if it’s better to ditch the animal products altogether.
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