砂石精选
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Besides the storm tide impact, the main causes for coastal erosion are due to the continued decrease of material supply and manual extraction of sand and gravel.
海岸侵蚀的原因除风暴潮影响外,主要是海岸带物质补给来源持续减少和人工采挖砂石。
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Major activities in the area are agriculture, forest management, sand and gravel extraction, industry (diverse types), and ecotourism.
UNESCO: EDUCATION
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