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。
2
The model is used to classify the parent population of modernsediment samples from different areas and different sedimentary environments, resulting fine effects.
用它对几个地区不同沉积环境类型的现代沉积物样品进行了细致的粒度母体模式分类，并取得了良好的效果。
3
The modernsediment 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.