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Villagers plant grass in Gaoshawo town, Yanchi, Ningxia Hui autonomous region on October 21, 2009. Ningxia is among the most severe desertified areas in 皇冠体育app. After a series of efforts were made, such as returning farmlands to forests and preserving wetlands, 4,670 sq km of desertified land in the region has improved. [Xinhua]
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