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Archive for the ‘soil erosion’ Category

The Mesopotamian Dust Bowl

Posted by feww on August 18, 2009

Image of the day: Another Dust Storm Over Iraq and Kuwait

Iraq_AMO_2009227
Thick clouds of dust blew from the agricultural lands between the Euphrates and Tigris Rivers in Iraq on August 15, 2009. The pale dust obscures most of Kuwait and culminates in a distinct plume over the Persian (Arabian) Gulf. One plume on the east side of the storm is darker than the rest of the airborne dust. This plume either comes from a different type of source—exposed agricultural soil instead of desert, perhaps—or it is a plume of smoke from a fire. Red dots mark where the Moderate Resolution Imaging Spectroradiometer (MODIS) detected fires, but in this case, a fire may be hidden from the sensor by the dust storm. Ongoing drought may be contributing to the frequent and severe dust storms Iraq has experienced in 2009.

The MODIS sensor flying on NASA’s Aqua satellite captured this image on August 15, 2009. Twice-daily images of Iraq and Kuwait are available from the MODIS Rapid Response System.  NASA image courtesy the MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.

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Posted in desertification, Environmental Catastrophe, global climate change, soil erosion, World’s Collapsing Cities | Tagged: , , , , | 2 Comments »

California: Biggest Desert in N America

Posted by feww on August 16, 2009

CALIF DESERTIFICATION: NOT IF, BUT WHEN

Desertification of California in the Near Future Is Almost a Certainty

Drought often have significant environmental, economic and social impacts:

  • Shortages of water for agricultural, industrial, municipal and personal uses.
  • Death of livestock.
  • Crop failure, reduced crop yields.
  • Wildfires are more common during periods of drought.
  • Dust storms created by drought-enhanced land erosion and by desertification.
  • Malnutrition, dehydration and related diseases.
  • Famine due to lack of water for irrigation.
  • Social unrest.
  • Mass migration, resulting in internal displacement and international refugees.
  • War over natural resources, including water and food.
  • Reduced electricity production due to insufficient available coolant for power stations and reduced water flow through hydroelectric dams.
  • Snakes have been known to emerge and snakebites become more common.
  • Creates windblown dust bowls which erodes the landscape, damages terrestrial and aquatic wildlife habitat. (Source)

US Drought Monitor


Objective Long Term Drought Indicator Blend Percentiles


Objective Short Term Drought Indicator Blend Percentiles
To view regional drought conditions, go to US Drought Monitor and click on the map. State maps can be accessed from regional maps.

Drought in California’s Central Valley

[Image acquired July 12 – 27, 2009 by EO – Posted Aug 16, 2009]
centralvalleyndvia_tmo_2009193
By the end of July 2009, California was well into its third dry year in a row. The image was made from data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite between July 12 and July 27, 2009. The sensor records the amount of light that photosynthesizing plants absorb and reflect as they grow. The image shows how vegetation fared in 2009 compared to the average based on observations between 2000 and 2008. In places where plants were growing more than average, the image is green. Cream is used to denote average growth, and brown points to less plant growth than average. In this image, dark squares of brown are scattered across much of the Westlands and Tulare Lake water districts. These brown squares are fields that would ordinarily support irrigated crops, but in 2009 the crops were not growing well or the fields lay fallow.

References

NASA image created by Jesse Allen, Earth Observatory, using data provided by Inbal Reshef, Global Agricultural Monitoring Project. Caption by Holli Riebeek and Rebecca Lindsey. [Edited by FEWW]

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Posted in Mojavefication, soil erosion, topsoil, Tulare Lake, Westlands | Tagged: , , , , | 3 Comments »

Only One Guess Allowed!

Posted by feww on April 24, 2008

Who said:

  • “I think that ethanol is the most popular whipping boy in the agricultural world at the moment”
  • “So to say that biofuels are the culprit clearly underestimates the demand and really shows a gross misunderstanding of the world food situation,”
  • “We have to grow more food. We have to increase yields”

Hint: To increase yields, farmers are forced to buy lots and lots more fertilizers!

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See the tags for the answer!

Posted in agirculture, agriculture, Bill Doyle, corporate lies, corporate profit, environment, food riots, North America, Potash Corp, soil erosion, topsoil, toxic | Tagged: , , , , , , , , , , , , , , , , , , | Leave a Comment »

Bangladesh coastal population threatend by sea level rise

Posted by feww on April 14, 2008

Country in Focus: Bangladesh


Satellite image of Bangladesh (Photo credit NASA)

Geography

  • Land Area: 136,000 km² (US comparative: slightly smaller than Iowa)
    [Global rank by area: 94th]
  • Water 10,325 km²
  • Coastline: 580 km

Elevation extremes

  • Lowest point: Indian Ocean 0 m
  • Highest point: Peak, the Mowdok range, 1052m

Most of the country is situated on deltas of large rivers flowing from the Himalayas: the Ganges unites with the Jamuna (main channel of the Brahmaputra) and later joins the Meghna to eventually empty into the Bay of Bengal (Source: CIA, The World Factbook)

Land use

  • Arable land: 55.39%
  • Permanent crops: 3.08%
  • Other: 41.53% (2005)

Map of Bangladesh (Source: CIA, The World Factbook)

Population

  • 2007 Estimate: 150,448,340
    [Global Rank by population: 7th]
  • Density: 1106/km²
    [Global Rank by population: 11th]
  • The population of Bangladesh rose from 75 million in 1971, to more than 150 million in 2007.
  • The population is still growing at an annual rate of about 2 percent.

Environmental issues
many people are landless and forced to live on and cultivate flood-prone land; water-borne diseases prevalent in surface water; water pollution, especially of fishing areas, results from the use of commercial pesticides; ground water contaminated by naturally occurring arsenic; intermittent water shortages because of falling water tables in the northern and central parts of the country; soil degradation and erosion; deforestation; severe overpopulation (Source: CIA, The World Factbook)

  • About 10 million people are threatened by annual floods and storms.
  • About 4,500 people were killed and at least two million were made homeless homeless as a result of two massive floods and a cyclone in 2007.
  • Extreme climate events destroyed about 2 million tonnes of rice, the country’s main staple, in 2007.


Ganges River Delta, Bangladesh and India (Image: NASA)

Bangladesh is threatened by

  • Climate Change
  • Rising population
  • Shrinking farmland


3/4 of Dhaka, the capital of Bangladesh, under water (2004)
Bangladeshi Children and adults move through flood stricken areas.

[Photo Credit: University of Alabama]

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Posted in climate refugees, food, hunger, rice, soil degradation, soil erosion, storms | Tagged: , , , , , | 2 Comments »