3、人口 Nature and rate of Population Growth Figure 1.17 Global population density: the darker the shading, the higher the population density. From Waldo Tobler.Uwe Deichmann, Jon Gottsegen, and Kelly Maloy in Technical Report TR-95-6 Copyright o 1995 National Center for Geographic Information and Analysis. Santa Barbara, CA. Reprinted by permission 环质 Environmental Geology环境地质学 Environmental Geology 3、人口 Nature and Rate of Population Growth