Books about Aridity from Amazon.com

Rivers of Empire: Water, Aridity, and the Growth of the American West
When Henry David Thoreau went for his daily walk, he would consult his instincts on which direction to follow. More often than not his inner compass pointed west or southwest "The future lies that way to me," he explained, "and the earth seems more unexhausted and richer on that side." In his own imaginative way, Thoreau was imitating the countless young pioneers, prospectors, and entrepreneurs who were zealously following Horace Greeley's famous advice to "go west." Yet while the epic chapter in American history opened by these adventurous men and women is filled with stories of frontier hardship, we rarely think of one of their greatest problems--the lack of water resources. And the same difficulty that made life so troublesome for early settlers remains one of the most pressing concerns in the western states of the late-twentieth century.

The American West, blessed with an abundance of earth and sky but cursed with a scarcity of life's most fundamental need, has long dreamed of harnessing all its rivers to produce unlimited wealth and power. In Rivers of Empire, award-winning historian Donald Worster tells the story of this dream and its outcome. He shows how, beginning in the mid-nineteenth century, Mormons were the first attempting to make that dream a reality, damming and diverting rivers to irrigate their land. He follows this intriguing history through the 1930s, when the federal government built hundreds of dams on every major western river, thereby laying the foundation for the cities and farms, money and power of today's West. Yet while these cities have become paradigms of modern American urban centers, and the farms successful high-tech enterprises, Worster reminds us that the costs have been extremely high. Along with the wealth has come massive ecological damage, a redistribution of power to bureaucratic and economic elites, and a class conflict still on the upswing. As a result, the future of this "hydraulic West" is increasingly uncertain, as water continues to be a scarce resource, inadequate to the demand, and declining in quality.

Rivers of Empire represents a radically new vision of the American West and its historical significance. Showing how ecological change is inextricably intertwined with social evolution, and reevaluating the old mythic and celebratory approach to the development of the West, Worster offers the most probing, critical analysis of the region to date. He shows how the vast region encompassing our western states, while founded essentially as colonies, have since become the true seat of the American "Empire." How this imperial West rose out of desert, how it altered the course of nature there, and what it has meant for Thoreau's (and our own) mythic search for freedom and the American Dream, are the central themes of this eloquent and thought-provoking story--a story that begins and ends with water..
Price: $16.35 [Notify me when price goes down.]



Pasture yield response to precipitation and high temperature in Mongolia [An article from: Journal of Arid Environments]
This digital document is a journal article from Journal of Arid Environments, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Animal-available pasture biomass has been observed and recorded for the past few decades to assess the crucial impact of pasture conditions on pastoral livestock husbandry, which is one of the major industries in Mongolia. This database provided a unique, useful basis for the present correlation analysis between seasonal measures of meteorological variables and pasture yield at three sites in southern Mongolia. Precipitation in July exhibited a high correlation with pasture yield, whereas high temperatures in June and July demonstrated a considerable negative correlation. Consequently, a reduction in precipitation with an increase in high temperature results in a lower yield, whereas sufficient precipitation with a reduction in high temperature results in greater production. The study also attempted to establish a new aridity index. The pasture yield correlated closely with the new aridity index. This implies that aridity has the potential to restrain grass growth in Mongolia. .
Price: $10.95 [Notify me when price goes down.]


<< archibald macleish



Trademarks are property of the Trademark Owners.
Copyright 1998-2007 Real Open Organization, Kansas City, Missouri, USA