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A large area of bare sandland distributed in Beijing and its surrounding areas is one of sand source areas which contributes to high-frequent sand storms in Beijing in recent years, whereas increasing of surface coverage condition is one of effective meas |
中文意思: 摘要北京及其周边地区分布的大量裸露沙荒地是北京近年来沙尘暴频发的主要沙源之一,而增加其地表覆盖状况则是遏止就地扬沙起尘的有效措施之一。 |
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