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Dryland farming caused a large dust storm in parts of Eastern Washington on October 4, 2009. Courtesy: NASA/GSFC, MODIS Rapid Response [1]. Dryland farming has evolved as a set of techniques and management practices to adapt to limited availability of water, as in the Western US and other regions affected by climate change for crops such as tomato and maize.
The greatest issue in drylands, is land degradation which poses a huge danger to the world's capacity to end hunger. [7] Drylands occupy around 2 million km² or respectively 90%, 75%, and 67% of Kenya, [8] Tanzania, [9] and Ethiopia respectively. More than 60 million people, or 40% of these countries’ population, live in drylands.
During those three decades, drylands expanded worldwide by 4.3 million sq. km (1.66 million sq. mi.), an area nearly a third larger than the nation of India. And when the UNCCD says dry, they mean ...
According to Erin Stewart Mauldin, the geological history of the United States predates human settlement by millions of years. [2] The landscape of the North American continent's landscape was shaped by plate tectonics, volcanic activity, and glaciation.
Deforestation in the United States was affected by many factors. One such factor was the effect, whether positive or negative, that the logging industry has on forests in the country. Logging in the United States is a hotly debated topic as groups who either support or oppose logging argue over its benefits and negative effects.
Report on the Lands of the Arid Region of the United States is a scientific report and policy recommendation written by American explorer, geologist, and anthropologist John Wesley Powell, and first published in 1878. The work sought to create an equitable and sustainable method for developing the arid region of the United States, an area ...
Accession Date Area (sq.mi.) Area (km 2.) Cost in dollars Original territory of the Thirteen States (western lands, roughly between the Mississippi River and Appalachian Mountains, were claimed but not administered by the states and were all ceded to the federal government or new states by 1802)
Desertification is a gradual process of increased soil aridity.Desertification has been defined in the text of the United Nations Convention to Combat Desertification (UNCCD) as "land degradation in arid, semi-arid and dry sub-humid regions resulting from various factors, including climatic variations and human activities."