December 29, 2007--Global warming to alter Calif. landscape (Denver Post)

Because 35 percent of the state's water supply is stored annually in the Sierra snowpack, changes to that hydrologic system will lead to far-reaching consequences for California and its ever-growing population. Some transformations already are apparent, from the Sierra high country to the great valleys that have made California the nation's top agricultural state. The snow line is receding, as it is in many other alpine regions around the world. Throughout the 400-mile-long Sierra, trees are under stress, leading scientists to speculate that the mix of flora could change significantly as the climate warms. The death rate of fir and pine trees has accelerated over the past two decades.

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