China: Chinese scientific researchers successfully drew a 1:100,000 scale land cover map of Antarctica under the National 863 Program. This is the world’s first land cover map of Antarctica and the first batch of Chinese-owned important Antarctic scientific data.
Currently, there is little research of land cover classification in Antarctic, and there are no such classification systems that can completely, systematically and accurately classify all the land cover in Antarctica, Cheng Xiao, vice president of the College of Global Change and Earth System Science under Beijing Normal University, said.
Research teams from the College of Global Change and Earth System Science under Beijing Normal University applied key technologies, such as the adjustment of DN value overflow saturation, radiometric correction and apparent reflectance transition by collecting 1,100 multi-channel satellite images of Antarctica from 1999 to 2003 to reconcile the large number of satellite image data with the true state of the surface.
Cheng said that the land cover map of Antarctica better reflects the differences in Antarctic land cover classifications and is important for China’s scientific research in the polar regions. It can also supply more accurate surface parameters for scientific researchers engaged in climate system model prediction.
Source: People’s Daily online