The expansion and intensification of agriculture made possible by irrigation has the potential for causing: increased erosion; pollution of surface water and groundwater from agricultural biocides; deterioration of water quality; increased nutrient levels in the irrigation and drainage water resulting in algal blooms, …
What environmental problem is the result of irrigation?
Direct Environmental Impact Of Irrigation
Increased evaporation in irrigated areas can cause instability in the atmosphere, as well as increase levels of rainfall downwind of the irrigation. These changes to the climate are a direct result of changes to natural moisture levels in the surrounding atmosphere.
What are some environmental issues in North Africa?
The MENA region already faces a wide array of environmental stresses that include water scarcity, arable land depletion, air pollution, inadequate waste management, loss of biodiversity, declining marine resources and degradation of coastal ecosystems.
What is the greatest environmental challenge facing North Africa?
Among the serious challenges facing the North Africa region, freshwater scarcity ranks highest, given its impact on food security, economic development and poverty reduction, and socio-political stability (Lezzaik & Milewski, 2017).
What is causing water scarcity in North Africa?
There are several reasons why the water crisis is set to get worse – key ones include; the region’s burgeoning population, irrigation and the consequences of climate change.
What are the positive and negative effects of irrigation?
The effects may be water mining, land/soil subsidence, and, along the coast, saltwater intrusion. Irrigation projects can have large benefits, but the negative side effects are often overlooked. The lower the irrigation efficiency, the higher are the losses.
Where is the problem of air pollution most severe?
Around 91% of the world’s population lives in places where air quality levels exceed WHO limits. While ambient air pollution affects developed and developing countries alike, low- and middle-income countries experience the highest-burden, with the greatest toll in the WHO Western Pacific and South-East Asia regions.
Is pollution a problem in North Africa?
In the Middle East and North Africa, welfare losses related to air pollution were about $154 billion, or the equivalent of about 2.2 percent of regional GDP. “Air pollution is a challenge that threatens basic human welfare, damages natural and physical capital, and constrains economic growth.
What resources does North Africa have?
North Africa has vast oil and natural gas deposits, the Sahara holds the most strategic nuclear ore, and resources such as coltan, gold, and copper, among many others, are abundant on the continent.
What is North Africa climate?
North Africa has an arid desert climate, with high temperatures and very little precipitation (although temperatures in the mountains and the Sahara at nighttime can drop below freezing). … Instead of spring, summer, fall, and winter, most countries south of the Sahara Desert have dry and rainy seasons.
What area of North Africa probably gets the most rainfall?
Rainfall is highest in the north, where parts of the Kroumirie range in Tunisia receive between 40 and 60 inches of rainfall a year. This is in sharp contrast to the areas east of the High Atlas, where annual rainfall never totals above 17 inches.
What are two environmental challenges that the Middle East is facing today?
The Middle East and North Africa faces a host of major environmental challenges, from water scarcity and food insecurity to climate change adaptation.
Which is a negative effect of tourism in North Africa?
Which is a negative effect of tourism in North Africa? It requires large quantities of water for swimming pools, hotels, and golf courses. Which statement about the environmental impact of regional oil and petroleum industries is true? Winds can blow oil spills toward land and endanger coastal and marine environments.