The bar chart compares the proportion of land area affected by desertification in four distinct region of the world in 1990 and 2010
Overall, Sub Sahara Africa had by far the highest proportion of land affected by desertification and continued to rise in both year, outpointing the other three regions. By contrast Australia was the only region where the percentage decreased, while the figure for North America and Europe rose.
In North America , the proportion of land affected by desert climbed from 12% in 1990 to 15% in 2010. a similar trend was seen on Europe, where the figure increased from 9% in 1990 to 11% in 2010. However the increase in these two region was relatively small compared to that in Sub Sahara Africa.
In Sub Sahara Africa, the percentage of the affected land increased by 7 percentage point between 1990 and 2010, from 25% to 32%, respectively. By contrast, Australia experienced a slight decline from 14% in 1990 to 13% in 2010. despite this decreasing figure Australia had higher percentage of affected land compared with North America and Europe in 1990, although it was lower than North America in 2010.
