alluvia

The sandy soil that upland lime calcium pledges earth and fluvial two sides reach alluvion, sandy loam 4 kinds big.

丘陵石灰钙质和河流两岸及洲的、壤等四大类。

There are vast non-consolidated alluvia deposits freshly formed in estuary area of Yangtze River and nearby coastal area.The deposits contribute to land subsidence.

摘要长江河口滨海地区广泛分布有大量的填，由于其形成时间短，具有欠固结特性，因此对地面沉降大。