| ISS029 Earth Sciences and Image Analysis Photographic Highlights |
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| ISS029-E-8032 |
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| Fires along the Rio Xingu, Brazil: The rainforest of South
America, also known as Amazonia, has been undergoing a continual and
accelerated conversion process into farmlands (including pasture for
livestock) since the early 1960s. This process has typically been
achieved by clearing the forest using fire—“slash and burn”—followed
by planting of crops. The generally infertile soils of this
rainforest—the largest such forest on Earth—make sustainable farming
difficult. This drives people to convert more forest into farmland.
The area of clearing
can be considerable, and since the deforested regions are easily
identifiable and measurable from space, the rate of deforestation
is likewise easy to track. This astronaut photograph illustrates slash-and-burn forest clearing along the Rio Xingu (Xingu River) in the state of Matto Grasso, Brazil. The photo was taken from the International Space Station, a platform from which astronauts can capture images of the Earth from a variety of viewing angles. The perspective above shows both the horizontal position and the extent of the fire lines next to the river, while also providing a sense of the vertical structure of the smoke plumes. Light colored areas within the river channel are sand bars, which show that the river is in its annual low-flow/low-water stage. For a sense of scale, the river channel is approximately 63 kilometers (39 miles) long in this view. Rivers are the natural highways in Amazonia, which may explain why the burning is occurring right next to the Xingu River, one of Amazonia’s largest. In recent years, forest preservation has gained traction in the region as a result of new valuation of the ecosystem services provided by the forest, concerns about the impact of the burning on global climate change, and greater sensitivity to the ethnic and biological heritage of Amazonia. |
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This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." . |
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