[:ja]NASAの地球観測衛星Landsat 8が撮影したウクライナのオレシュキー砂丘です。
オレシュキー砂丘国立自然公園はクリミア半島の70kmほど北にある砂丘です。この公園は養分の少ない土地と砂が広がっています。砂漠化の原因は研究によっていまだに突き止められていません。ドニエプル川の川岸が乾燥し不毛の大地になったという説もありますが、主流は、羊などの家畜による環境破壊と言われています。
地上の様子はこちらです。
参考文献： Oleshky Sands (NASA Earth Observatory)
地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.890: Oleshky Sands, Ukraine🇺🇦
NASA’s Landsat 8 captured Oleshky Sands, Ukraine.
Oleshky Sands National Nature Park is a national park of Ukraine, located south of the lower Dniester River about 25 km east of the regional city of Kherson, and 70 km northwest of the Crimean Peninsula. The park features expanses of low-fertility soil and sand, and a variety of unusual microhabitats. Researchers are uncertain what made the area turn to desert. One theory is that the land is a dried riverbed of the Dnieper River (the modern-day course runs north of this image). A common explanation, however, is that millions of sheep that were pastured here in the 18th and 19th centuries initiated the desertification, which has since been sustained by wildfire and wind erosion.
The local scenery on the ground is as follows.
Reference: Oleshky Sands (NASA Earth Observatory)
See earthview photo gallery: LiVEARTH[:en][Earthview Wonders] No.890: Oleshky Sands, Ukraine🇺🇦
NASA’s Landsat 8 captured Oleshky Sands, Ukraine.
Oleshky Sands National Nature Park is a national park of Ukraine, located south of the lower Dniester River about 25 km east of the regional city of Kherson, and 70 km northwest of the Crimean Peninsula. The park features expanses of low-fertility soil and sand, and a variety of unusual microhabitats. Researchers are uncertain what made the area turn to desert. One theory is that the land is a dried riverbed of the Dnieper River (the modern-day course runs north of this image). A common explanation, however, is that millions of sheep that were pastured here in the 18th and 19th centuries initiated the desertification, which has since been sustained by wildfire and wind erosion.
The local scenery on the ground is as follows.
Reference: Oleshky Sands (NASA Earth Observatory)
See earthview photo gallery: LiVEARTH[:]