Current Status of Soil and Water Conservation in Abandoned Waste Disposal Sites of Production and Construction Projects in Southwest China
In this paper,we conduct a field survey of 217 dumps abandoned spoil sites in Southwest China.With in-depth analysis from the site selection,stacking forms,soil erosion control status and other aspects,this paper explores the characteristics of anthropogenic soil erosion in these spoil sites.Results reveal that:(1)The site selection for spoil sites in the southwestern region is often located in areas with steep slopes,such as hillsides and gullies,primarily adopting an unregulated top-down progressive stacking method for spoil disposal.The evolution process of spoil body morphology can be divided into three phases:dumping stacking form along the slope(Phase I),the stacking form of single-stage loose slope with strong compaction on the slope top platform(Phase II),and multi-stage loose slope stacking form(Phase III).(2)Local overloading,graded disturbance,and plant establishment period at the end of Phase II and the beginning of Phase III are the main stages of spoil loss.(3)During the spoil disposal process,only the timeliness and completion of blocking measures are relatively high,while interception and drainage,thatching cover and plant measures are often neglected.The research results can serve as a scientific basis for the comprehensive management of spoil sites and the prevention of soil erosion.
dumping siteproduction and construction projectsite selectionstacking formsoil erosion prevention
万方数据
维普
