precipitation Figure 6: Arid (black) and semi-arid (grey) regions in the world [source: VanLoon, 2005] The arid and semi-arid regions cover 30 % of the total area in the world and 80 countries occupy these regions. In the north, the arid zone extends into the Punjab and Haryana states and in the South into the Gujarat State. This may result in more and more people being left without food and their needing to migrate. According to literature, arid and semi-arid lands are defined based on the characteristics of the climate. They are already climatically stressed with high temperatures, low rainfall and long dry seasons. Arid regions of the Western United States as mapped in 1893. According to the researchers, there may be several explanations for the uneven impact of climate change. Climate change to reduce solar radiation in hot, arid regions. Forecasts point to an expansion of today's arid areas where they will make up a larger and larger share of our global ecosystems. one of the major semi-arid regions in East Asia and even the world (Piao et al., 2010). Rising salinities result from … Dates have been the essential food in many regions around the world, especially arid zones of the old world and part of the diet all year-round. London, Nov 28 While climate change and rising global temperatures are leading to decline in vegetation in arid regions of the world's poorest countries, the situation appears to be better in wealthier countries, says a study. Earth Tracker. EN HI . ALL RIGHTS RESERVED. Abu Dhabi to spend $41 million to develop technology to grow food in arid regions The partnerships include a greenhouse venture focused on growing fruit and vegetables with less water. Because they are a resource in short supply, waters in drylands are under increasing human pressures, and many are threatened by rising salinities (salinisation) in particular. drylands with annual mean rainfall between 25 and 500 mm) cover approximately one‐third of the world’s land area and are inhabited by almost 400 million people. That means that 40 % of the world’s population live in these areas. "@context": "http://schema.org", 26 - واستطردت قائلة إن منغوليا تقع في واحدة من أكثر المناطق القاحلة في العالم وتعاني من القحط بشدة. July 2014 . Special issue on Hydrology of semi-arid and arid zones As our global population expands, human footprint in semi-arid and arid regions of the world continues to expand. And semi-arid Lands are defined based on the characteristics of the world 's areas. Record, some may need an antidote these zones the average annual precipitation and evapotranspiration as being vulnerable... 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