3D Mapping The Largest Population Density Centers
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3D Mapping The Largest Population Density Centers

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Mapping 3d global population density spikes
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A 3D Look at the Largest Population Density Centers

It can be difficult to comprehend the true sizes of megacities, or the global spread of nearly 7.8 billion people, but this series of population density maps makes the picture abundantly clear.

Created using the EU’s population density data and mapping tool Aerialod by Alasdair Rae, the 3D-rendered maps highlight demographic trends and geographic constraints.

Though they appear topographical and even resemble urban areas, the maps visualize population density in squares. The height of each bar represents the number of people living in that specific square, with the global map displaying 2km x 2km squares and subsequent maps displaying 1km x 1km squares.

Each region and country tells its own demographic story, but the largest population clusters are especially illuminating.

China vs U.S. — Clusters vs Sprawl

china taiwan density map

Click here to view the high resolution version.

Zooming into the most populated country in the world, China and its surrounding neighbors demonstrate massive clusters of urbanization.

Most people are familiar with the large density centers around Hong Kong, Guangzhou, and Shanghai, but the concentration in central China is surprising. The cities of Chengdu and Chonqing, in the Sichuan Basin, are part of a massive population center.

Interestingly, more than 93% of China’s population lives in the Eastern half of the country. It’s a similar story in neighboring South Korea and Taiwan, where the population is clustered along the west coasts.

population density spikes in the united states

Click here to view the high resolution version.

The U.S. also has large population clusters along the coasts, but far more sprawl compared to its Asian counterparts. Though the Boston-Washington corridor is home to over 50 million residents, major centers spread out the population across the South and the Midwest.

Clearly visible are clusters in Florida (and not exclusively focused around Miami like some might believe), Illinois, Georgia, and Texas. The population is sparse in the West as expected, but California’s Los Angeles and Bay Area metros make up for the discrepancy and are just behind New York City’s density spikes in height.

India & Southeast Asia — Massive Density in Tight Areas

india pakistan density map

Click here to view the high resolution version.

At 1.38 billion people, India’s population is just behind China’s in terms of size. However, this sizable population fits into an area just one-third of China’s total land area, with the above map demonstrating what the same amount of people looks like in a smaller region.

On one hand, you still have clear clusters, such as in Mumbai, New Delhi, Kolkata, and Bangladesh’s Dhaka. On the other, there is a finite amount of room for a massive amount of people, so those density “spikes” are more like density “peaks” with the entire country covered in high density bars.

However, we can still see geographic trends. India’s population is more densely focused in the North before fading into the Himalayas. Bangladesh is equally if not more densely populated, with the exception of the protected Sundarbans mangrove forest along the coast. And Pakistan’s population seen in the distance is clustered along the Indus River.

south east asia density map

Click here to view the high resolution version.

Geographic constraints have always been the biggest deciding factor when it comes to population density, and nowhere is this more apparent than Southeast Asia.

Take Indonesia, the fourth largest country by population. Despite spanning across many islands, more than half of the country’s 269 million inhabitants are clustered on the single island of Java. The metros of Jakarta and Surabaya have experienced massive growth, but spreading that growth across oceans to entirely new islands (covered by rainforests) is a tall order.

When the distance is smaller, that cross-water growth is more likely to occur. Nearby in the Philippines, more than 100 million people have densely populated a series of islands no bigger than the state of Arizona.

Indeed, despite being one of the most populated areas in the world, each country in Southeast Asia has had its own growing problems. Some are limited by space (Singapore, Philippines), while others are limited by forests (Thailand, Vietnam).

A World of Different Density Pictures

Though the above maps cover the five most populated countries on Earth, accounting for nearly half of the world’s population, they only show a small part of the global picture.

As the full global density map at the top of the page highlights, the population patterns can accurately illustrate some geographic patterns and constraints, while others need further exploration. For example, the map clearly gives an outline of Africa and the sparse area that makes up the Sahara Desert. At the same time, landmasses like Australia and New Zealand are almost invisible save for a few clusters along the coast.

To get a closer and more intricate picture of each country’s density map, head to Alasdair Rae’s long thread of rendered maps and start scrolling up to find yours!

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Politics

Interactive Map: Tracking Global Hunger and Food Insecurity

Every day, hunger affects more than 700 million people. This live map from the UN highlights where hunger is hitting hardest around the world.

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The World Hunger Map

Interactive Map: Tracking Global Hunger and Food Insecurity

Hunger is still one the biggest—and most solvable—problems in the world.

Every day, more than 700 million people (8.8% of the world’s population) go to bed on an empty stomach, according to the UN World Food Programme (WFP).

The WFP’s HungerMap LIVE displayed here tracks core indicators of acute hunger like household food consumption, livelihoods, child nutritional status, mortality, and access to clean water in order to rank countries.

The World Hunger Map

After sitting closer to 600 million from 2014 to 2019, the number of people in the world affected by hunger increased during the COVID-19 pandemic.

In 2020, 155 million people (2% of the world’s population) experienced acute hunger, requiring urgent assistance.

The Fight to Feed the World

The problem of global hunger isn’t new, and attempts to solve it have making headlines for decades.

On July 13, 1985, at Wembley Stadium in London, Prince Charles and Princess Diana officially opened Live Aid, a worldwide rock concert organized to raise money for the relief of famine-stricken Africans.

The event was followed by similar concerts at other arenas around the world, globally linked by satellite to more than a billion viewers in 110 nations, raising more than $125 million ($309 million in today’s dollars) in famine relief for Africa.

But 35+ years later, the continent still struggles. According to the UN, from 12 countries with the highest prevalence of insufficient food consumption in the world, nine are in Africa.

Country % Population Affected by HungerPopulation (millions)Region
Afghanistan 🇦🇫93%40.4Asia
Somalia 🇸🇴68%12.3Africa
Burkina Faso 🇧🇫61%19.8Africa
South Sudan 🇸🇸60%11.0Africa
Mali 🇲🇱60%19.1Africa
Sierra Leone 🇸🇱55%8.2Africa
Syria 🇸🇾55%18.0Middle East
Niger 🇳🇪55%22.4Africa
Lesotho 🇱🇸50%2.1Africa
Guinea 🇬🇳48%12.2Africa
Benin 🇧🇯47%11.5Africa
Yemen 🇾🇪44%30.0Middle East

Approximately 30 million people in Africa face the effects of severe food insecurity, including malnutrition, starvation, and poverty.

Wasted Leftovers

Although many of the reasons for the food crisis around the globe involve conflicts or environmental challenges, one of the big contributors is food waste.

According to the United Nations, one-third of food produced for human consumption is lost or wasted globally. This amounts to about 1.3 billion tons of wasted food per year, worth approximately $1 trillion.

All the food produced but never eaten would be sufficient to feed two billion people. That’s more than twice the number of undernourished people across the globe. Consumers in rich countries waste almost as much food as the entire net food production of sub-Saharan Africa each year.

Solving Global Hunger

While many people may not be “hungry” in the sense that they are suffering physical discomfort, they may still be food insecure, lacking regular access to enough safe and nutritious food for normal growth and development.

Estimates of how much money it would take to end world hunger range from $7 billion to $265 billion per year.

But to tackle the problem, investments must be utilized in the right places. Specialists say that governments and organizations need to provide food and humanitarian relief to the most at-risk regions, increase agricultural productivity, and invest in more efficient supply chains.

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Markets

Mapped: Distribution of Global GDP by Region

Where does the world’s economic activity take place? This cartogram shows the $94 trillion global economy divided into 1,000 hexagons.

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Map of Global Wealth Distribution

Mapped: The Distribution of Global GDP by Region

Gross domestic product (GDP) measures the value of goods and services that an economy produces in a given year, but in a global context, it is typically shown using country-level data.

As a result, we don’t often get to see the nuances of the global economy, such as how much specific regions and metro areas contribute to global GDP.

In these cartograms, global GDP has been normalized to a base number of 1,000 in order to show a more regional breakdown of economic activity. Created by Reddit user /BerryBlue_Blueberry, the two maps show the distribution in different ways: by nominal GDP and by GDP adjusted for purchasing power parity (PPP).

Methodology

Before diving in, let us give you some context on how these maps were designed. Each hexagon on the two maps represents 0.1% of the world’s overall GDP.

The number below each region, country or metropolitan area represents the number of hexagons covered by that entity. So in the nominal GDP map, the state of New York represents 20 hexagons (i.e. 2.0% of global GDP), while Munich’s metro area is 3 hexagons (0.3%).

Countries are further broken down based on size. Countries that make up more than 0.95% of global GDP are broken down into subdivisions, while countries that are smaller than 0.1% of GDP are grouped together. Metro areas that account for over 0.25% of global GDP are featured.

Finally, it should be noted that to account for some outdated subdivision participation data, the map creator calculated 2021 estimates for this using the formula: national GDP (2021) x % of subdivision participation (2017-2020).

Nominal vs. PPP

The above map is using nominal data, while the below map accounts for differences in purchasing power (PPP).

Adjusting for PPP takes into account the relative value of currencies and purchasing power in countries around the world. For example, $100 (or its exchange equivalent in Indian rupees) is generally going to be able to buy more in India than it is in the United States.

This is because goods and services are cheaper in India, meaning you can actually purchase more there for the same amount of money.

Anomalies in Global GDP Distribution

Breaking down global GDP distribution into cartograms highlights some interesting anomalies worth considering:

  1. North America, Europe, and East Asia, with a combined GDP of nearly $75 trillion, make up 80% of the world’s GDP in nominal terms.
  2. The U.S. State of California accounts for 3.7% of the world’s GDP by itself, which ranks higher than the United Kingdom’s total contribution of 3.3%.
  3. Canada as a country accounts for 2% of the world’s GDP, which is comparable to the GDP contribution of the Greater Tokyo Area at 2.2%.
  4. With a GDP of $3 trillion, India’s contribution overshadows the GDP of the whole African continent ($2.6 trillion).
  5. This visualization highlights the economic might of cities better than a conventional map. One standout example of this is in Ontario, Canada. The Greater Toronto Area completely eclipses the economy of the rest of the province.

Inequality of GDP Distribution

The fact that certain countries generate most of the world’s economic output is reflected in the above cartograms, which resize countries or regions accordingly.

Compared to wealthier nations, emerging economies still account for just a tiny sliver of the pie.

India, for example, accounts for 3.2% of global GDP in nominal terms, even though it contains 17.8% of the world’s population.

That’s why on the nominal map, India is about the same size as France, the United Kingdom, or Japan’s two largest metro areas (Tokyo and Osaka-Kobe)—but of course, these wealthier places have a far higher GDP per capita.

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