modern sediment deposits 新淤积泥沙
Modern sediment dating 现代沉积物定年
Modern sediment samples 现代沉积样品
modern surface sediment 现代表层沉积物
The research indicates that the modern sediment is divided three layers: polluted layer,transition zone and unpolluted layer. Just the pollute layer cause Dianchi Lake environmental pollution.
研究结果表明：滇池现代沉积物主要分为三层，污染层、过渡层和未污染的湖泊沉积层，其中污染层是对滇池环境污染造成影响的层位；氨氮的高值区主要分布在北部海埂附近，中部略有增高，南部则最低，表层沉积物的氨氮含量低于下层；而有效磷的高值区则分布在海口—晋宁附近，由北向南，有效磷的含量依次递增，表层有效磷的含量要明显高于底层。
参考来源 - 滇池现代沉积物的主要理化性质研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The estuarine delta area is abundant in sediment supply, and is a high modern sedimentation rate area.
河口三角洲地区泥沙供应充分，是现代沉积速率较高的区域。
The modern sediment is an important storehouse of the nutrient salt and pollutant in lakes. Under proper conditions, these internal contamination load sources can cause the eutrophication of lakes.
现代沉积物是湖泊营养盐和污染物的重要储藏库，在一定条件下，这些内源污染负荷可能成为水体富营养化的主导因子。
By analysis of sand grain size in sediment microenvironment of modern rivers, the size and shape of grain and surface texture feature of quartz grain were described in this paper.
本文根据现代河流的已知沉积微环境中的砂样分析，阐述了河北平原河流沉积物的粒度成分、形态和石英颗粒的表面结构特征。
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