Impact of Humans on the Flux of Terrestrial Sediment to the Global Coastal Ocean

DOI Web Site 被引用文献32件
  • James P. M. Syvitski
    Environmental Computation and Imaging Facility, Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, CO 80309-0450, USA.
  • Charles J. Vörösmarty
    Environmental Computation and Imaging Facility, Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, CO 80309-0450, USA.
  • Albert J. Kettner
    Environmental Computation and Imaging Facility, Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, CO 80309-0450, USA.
  • Pamela Green
    Environmental Computation and Imaging Facility, Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, CO 80309-0450, USA.

書誌事項

公開日
2005-04-15
DOI
  • 10.1126/science.1109454
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p>Here we provide global estimates of the seasonal flux of sediment, on a river-by-river basis, under modern and prehuman conditions. Humans have simultaneously increased the sediment transport by global rivers through soil erosion (by 2.3 ± 0.6 billion metric tons per year), yet reduced the flux of sediment reaching the world's coasts (by 1.4 ± 0.3 billion metric tons per year) because of retention within reservoirs. Over 100 billion metric tons of sediment and 1 to 3 billion metric tons of carbon are now sequestered in reservoirs constructed largely within the past 50 years. African and Asian rivers carry a greatly reduced sediment load; Indonesian rivers deliver much more sediment to coastal areas.</jats:p>

収録刊行物

  • Science

    Science 308 (5720), 376-380, 2005-04-15

    American Association for the Advancement of Science (AAAS)

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