10 Nov '17, 3pm

Ginseng Farms in Northern China

Wild ginseng is an inconspicuous understory plant that grows in shady, moist hardwood forests in Asia and North America. In many Asian cultures, ginseng is thought to have curative properties, a long-held belief that has driven demand so high that it is rare for the plant to be found in the wild in most of Asia. Instead, a multi-billion dollar market for farmed ginseng has emerged. In some parts of China, ginseng farming is easily visible from space. On September 25, 2017, the Operational Land Imager (OLI) on Landsat 8 captured this image of purple and yellow shade covers for ginseng crops amidst browning hills and farmland in Heilongjiang province in northeastern China. Shade covers are used because the plants cannot tolerate direct sunlight. The image is centered on fields about 20 kilometers northwest of Tieli . China is the world’s leading producer of ginseng. Much of ...

Full article: https://earthobservatory.nasa.gov/IOTD/view.php?id=91254&...

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