This massive polar desert accounts for approximately 14.2 million square kilometers (5.5 million square miles) of the Earth's surface. The largest hot desert on Earth is Africa's Sahara desert,... By 2045, 135 million people could be displaced as a result of … How much of the Earth's land surface is desert? Water constitutes 71 per cent of the earth. Posted by: annebergsgården … how much of the earth's land surface is desert - Answers how much of the earth's land surface is desert Global Land Degradation - The World Counts The largest hot desert on Earth is Africa's Sahara desert, … Almost half of the Earth’s land surface must be protected to stop the biodiversity crisis, according to a new report published Friday in the journal Science. Located at latitudes 55° to 70° North, the tundra is a vast and treeless land which covers about … how much of the earth's land surface is desert. But what percentage of the Earth’s land surface is desert? Deserts actually make up 33%, or 1/3rd of the land’s surface area. That might sound like a surprisingly large amount, but that’s based on the official definition of a desert. Desert are any region on Earth that can have a moisture deficit over the course of a year. Largest Asian Desert is Gobi, Mongolia. climate - What percentage of Earth's surface is arid? - Earth … Click to see full answer. Deserts cover more than one fifth of the Earth's land, and they are found on every continent. A place that receives less than 10 inches (25 centimeters) of rain per year is considered a desert. Deserts are part of a wider classification of regions called "drylands." Grid News is for people who want the full story. The research found … About one third of the earth's land surface is covered by deserts. [Solved] How much of the Earth's land surface is desert?