This unique addition to reference literature provides an introduction to the major concepts and contemporary issues that are essential for students of environmental science and environmental studies to know. With over 200 entries authored by world-class names like Anthony Brazel, John Day and Edward Keller, this text is divided into six sections: Environmental Science, Environments, Paradigms & Concepts, Processes & Dynamics, Scales & Techniques, and Environmental Issues.  

Anthropogenic Impact, Noosphere

Anthropogenic impact, noosphere

Anthropogene, a Russian term for the period during which man has been an inhabitant of the earth, indicates that anthropogenic impact is the impact of human activities upon physical environment. We now realize how substantial such impacts have been (e.g., Fig. 9) and there are many which are obvious or direct including cloud seeding, soil conservation, deforestation, or the creation of new lakes and reservoirs by the damming of rivers. Less obvious at first are the many less well known, or indirect, effects which include changes to precipitation character and amounts as a result of the existence of urban areas; the incidence of soil erosion as a result of grazing pressure; the introduction of new plant species; or the ways ...

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