By Jill Boberg
Explosive inhabitants grwoth throughout the twentieth century coincided with environmental switch, corresponding to international warming, elevated toxins, and source depletion.
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Additional info for Liquid Assets: Demographics Water Management & Freshwater Resources
Irrigated production provides 60 percent of the food in India and 70 percent of the grain in China (ECSP, 2002), and India uses 92 percent of all water for agricultural purposes, with just 5 percent for industry, and 3 percent for domestic use (Gleick, 2000b). Partly because of this trend, the area of land under irrigation is estimated to have increased more than six times in the last century (WRI, 1996). Half of the land currently under irrigation was added since 1950, but per-capita irrigated land is now decreasing (de Villiers, 2000).
Demand varies geographically. There are many regional differences in the demand for water. Agricultural demand ranges from zero percent of total freshwater withdrawals in the Maldives to 99 percent in Afghanistan, Nepal, Guyana, and Madagascar. Industrial use ranges from a low of zero percent in several countries such as Burundi, Belize, and Somalia, to a high of 85 percent in Belgium. Finally, the domestic sector withdrawal of water ranges from one percent in Turkmenistan, Afghanistan, Nepal, Guyana, and Madagascar, to 87 percent in Malta.
The relationship is not simply linear because different populations and individuals will use resources in different ways and in different amounts due to mediating factors and resource limitations.