By United Nations
This wonderful 400-page Atlas is a special and strong book which brings to gentle tales of environmental switch at greater than a hundred destinations unfold throughout each kingdom in Africa. There are greater than three hundred satellite tv for pc photos, three hundred floor photos and one hundred fifty maps, in addition to informative graphs and charts that supply a vibrant visible portrayal of Africa and its altering setting that supply medical proof of the effect that traditional and human actions have had at the continents atmosphere during the last numerous many years. The observations and measurements of environmental swap support gauge the level of growth made by means of African international locations in the direction of achieving the United countries Millennium improvement pursuits. extra importantly, this publication contributes to the information and realizing which are crucial for variation and remediation, and may be of enormous worth to all those that need to know extra approximately Africa and who care in regards to the way forward for this continent.
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Extra info for Africa: Atlas of Our Changing Environment
In addition to unsustainable harvests, inland ﬁsheries are affected by environmental degradation and exotic species introductions (Balirwa 2007). 0 0 625 1 250 Kilometres Water pollution exacerbates water scarcity and impacts ﬁsheries. Dams and water transfer can affect water quality. The damming of the Nile River at Aswan, for example, has reduced the level of nutrients so much that the sardine catch in the Nile Delta has fallen from 22 618 million metric tonnes in 1968 to under 13 500 million metric tonnes in 2002, and it is still declining (Bird and Medina 2002).
Nevertheless, the per capita water consumption in Africa, 31 m3 per year, is still comparatively lower than other regions—eg. North America— 221 m3 per year (UNESCAP 2007). Agriculture, by far, accounts for most of the water consumption and withdrawal in Africa, followed by reservoirs, municipal use, and industrial use. ibraltar t of G bi qu e oz Freshwater i Stra ed Sea Red An increasing population and a decreasing water supply leads to water scarcity and stress. Water scarcity is deﬁned as less than 1 000 m3 of potable water available per person per year, while water stress means less than 1 700 m3 of potable water is available per person per year (UNEP 2002).
Detecting lightning helps scientists to understand Earth’s climate system and monitor changes in severe storms and precipitation patterns over time. The map (right) shows the average yearly number of lightning ﬂashes per square kilometre based on data collected between 1995 and 2002. The places with the highest number of lightning ﬂashes per square kilometre per year appear as dark red patches. Although lightning is common across much of Africa, it is very common near the heart of the continent.