Revisiting Spatiotemporal Changes in Global Urban Expansion during 1995 to 2015

Table 2

Statistics on NAUL land-use sources at the global scale.

Original land-use type	Area (km^2)	Ratio (%)
Agriculture		68.93
Grassland		10.10
Forest		9.76
Bare areas		4.12
Shrub land		4.10
Sparse vegetation		1.53
Water		0.76
Wetland		0.69
Settlement		0.01