西安建筑科技大学：《水资源利用与保护》参考资料_Water resources in the world_Watersheds of the World - Population Density

Watersheds of the World - Population Density People per Square Kilometer 0.22.49 Map Projection: Robinson Citation: Revenga, C, s. Murray, I Abramovitz, and A Hammond, 1998. Watersheds of the Wor Ecological value and Vulnerabilty. Washington, DC: World Resources Institute. e EarthTrends 2002 World Resources nstitute. Al right

Watersheds of the World - Population Density Map Projection: Robinson Citation: Revenga, C., S. Murray, J. Abramovitz, and A. Hammond, 1998. Watersheds of the World: Ecological Value and Vulnerability. Washington, DC: World Resources Institute. © EarthTrends 2002 World Resources Institute. All rights reserved. Fair use is permitted on a limited scale and for educational purposes

nalytical Overview This map shows population density by basin, expressed as people per square kilometer, 19 of people in each watershed by the land area of each Science Inform eEarthTrends 2002 Work

Analytical Overview: Source: A medium resolution global dataset, Gridded Population of the World (CIESIN 1995) was used to calculate population density. The dataset was compiled from the latest available census data at a variety of sub-national district levels, standardized to 1994. The total number of people in each basin was calculated using a 5-minute population count grid. Population density was calculated by dividing the total number of people in each watershed by the land area of each watershed. Revenga, C., S. Murray, J. Abramovitz, and A. Hammond, 1998. Watersheds of the World: Ecological Value and Vulnerability. Washington, DC: World Resources Institute, based on data from Consortium for International Earth Science Information Network (CIESIN), 1995. Gridded Population of the World, National Center for Geographic Information and Analysis Global Demography Project, distributed by the CIESIN. Description: This map shows population density by basin, expressed as people per square kilometer. The most densely populated basins are found in India, China, and parts of Europe. In Africa, the most densely populated basin is Lake Victoria, a subbasin of the Nile watershed. © EarthTrends 2002 World Resources Institute. All rights reserved. Fair use is permitted on a limited scale and for educational purposes