Human Domination of Earth's Ecosystems
Human alteration of Earth is substantial and growing. Between one-third and one-half of the land surface has been transformed by human action; the carbon dioxide concentration in the atmosphere has increased by nearly 30 percent since the beginning of the Industrial Revolution; more atmospheric nitr...
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Published in: | Science (American Association for the Advancement of Science) Vol. 277; no. 5325; pp. 494 - 499 |
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Main Authors: | , , , |
Format: | Journal Article |
Language: | English |
Published: |
Washington
American Society for the Advancement of Science
25-07-1997
American Association for the Advancement of Science The American Association for the Advancement of Science |
Subjects: | |
Online Access: | Get full text |
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Summary: | Human alteration of Earth is substantial and growing. Between one-third and one-half of the land surface has been transformed by human action; the carbon dioxide concentration in the atmosphere has increased by nearly 30 percent since the beginning of the Industrial Revolution; more atmospheric nitrogen is fixed by humanity than by all natural terrestrial sources combined; more than half of all accessible surface fresh water is put to use by humanity; and about one-quarter of the bird species on Earth have been driven to extinction. By these and other standards, it is clear that we live on a human-dominated planet. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 ObjectType-Review-3 content type line 23 |
ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.277.5325.494 |