Application of river sediments to soil improvement in urban green space

Abstract

At present, there are two main problems in urban green space soils. One is the change of soil properties due to human treading. The other is the invasion of guest soil and solid waste, which leads to poor soil physical status and fertility. A large amount of dredged sediment is generated every year in urban rivers, and if it is not handled properly, it will cause secondary pollution. Since the dredged sediment contains nutrients such as N and P required by plants, the dredged sediment can be applied to the problem of soil improvement in urban green space to achieve an ecological disposal effect.