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The point of annual population growth and future climate change in population growth

The point of annual population growth and future climate change in population growth

Lake Shasta, the largest manmade lake in California, was 36 percent in January 2014 with this picture. A new study shows climate change and population growth that violates water shortages in the US. century. Credit: USGS / Angela Smith.

Climate change and population growth are beginning to stage stages of water shortages in the United States, much longer than the end of the century, according to a new study by the AGU Magazine. Future of the Earth.

Efforts to effectively use water too should be done in municipal and industrial sectors, it is not enough to save crafts, as the authors of the new study point out. The results suggest that reductions in agricultural water use will probably play a major role in reducing water shortages.

The objective of the new research is to increase the assessment of renewable forest resources in the US Forest Service for 10 years, including wood, wool planting, wildlife and water.

"Although this new study does not offer future best water supply and demand inventory, it analyzes what we can do to reduce the expected deficit," said Thomas Brown, the US Forest Service at the Rocky Mountain Research Station in Colorado, and a leading author of the study.

To this end, researchers used global climatic models for future climate scenarios and how likely water supply and demand were to be addressed. They also worked on population growth.

Regarding the supply of water, the authors used a water flow pattern to calculate the amount of water used to be available throughout the country, how to distribute water and how to deliver it off-streaming, or to store it in reservoirs for future use.

According to the new study, climate change and population growth are likely to be a serious challenge in some US regions, especially Central and Southern Great Plains, Southwestern and Central Rocky Mountain States, and California, as well as Southern and Midwest.

The heart of the new analysis compares future water supply for water use in various water sectors, such as industry and agriculture.

In the study, the percentage of water usage rates continues to fall, it is likely that most water use sectors are not enough, but it is not enough to avoid water shortages due to the combined effects of population growth and climate change.

The authors of the study saw adaptive strategies for reducing water deficiencies predicted, such as increasing the storage capacity of the reservoir, draining more water aquifers in aquatic water, and diverting water and rivers into more water. Increasing the size of reservoirs is not promising to reduce water shortages, especially in the United States as the dryer is anticipated as climate change progresses.

"When water is limiting, it's harder for a reservoir to save water," Brown said.

By reducing groundwater reserves and stream flow flows, it can change future deficiencies in many areas, but also suffer serious social and environmental costs. If these costs are to be avoided, irrigation efficiency improvements should be highly prioritized and more cross-fertilization in agriculture will be more likely, according to the authors of the study.

Brown warns that people would not read too much about their water supply report. New research designs large warehouses and do not affect the scale of cities or regions.

Explore more:
Climate change By 2050, in hundreds of conditions in the United States, it can cause water shortages

More information:
Thomas C. Brown et al. Adaptation of future water deficits in the United States. As a result of the Population Growth and Climate Change, Future of the Earth (2019). DOI: 10.1029 / 2018EF001091

American Geophysical Union

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