Population groups with the inhabited area, population, average population density, and population distance to water (dwpop).

Note: the total inhabited area is approximately 38% of the total surface area of the globe (see total land surface area in Table 3).aPopulation density calculated by using the area of inhabited areas.备注：全球有人居住区域总面积约占地球总表面积的38%（详见表3中的陆地总面积数据）。^a 人口密度通过有人居住区域的面积计算得出。