sentences:  Of the rest of the land, or 18.5% is settled (buildings or roads), or 2.5% is either rivers or lakes.Of the built-up area, housing and buildings comprised 7.6% and transportation infrastructure made up 3.9%.Power and water infrastructure as well as other special developed areas made up 6.2% of the area Out of the forested land, all of the forested land area is covered with heavy forests.