The classification of coastal dunes is the most important basic problem in the research on the landscape of the wind drift sand in coastal region.
海岸沙丘分类一直是海岸风沙地貌研究的重要基础问题之一。
The wind-drift sand land is both an available land resource and a source of pollutants of environmental pollution.
风沙化土地既是可利用的土地资源，又是环境污染的物质源地。
The wind-drift sand land is both an available land resource and a source of pollutants of environmental pollution.
风沙化土地既是可利用的土地资源，又是环境污染的物质源地。
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