ABSTRACT

Topsoil transposition is an efficient technique for recovering mining-degraded areas. However, storage time may reduce its functionality. To evaluate the effect of storage and litter addition, physical (microstructure) and chemical (fertility) properties were assessed in stored (3-months) and non-stored topsoils. Twelve months after transposition, regardless of the storage time, soil fertility and microstructure were improved, due to the mechanical work of plant roots recruited from topsoil seed bank or rain, and decomposition of pre-existing plant fragments. Litter addition did not affect chemical attributes but influenced microstructure transformations. Paedogenetic evolution was clearly fed by revegetation establishing a sustainable feedback system.

摘要

表土转置是一种用于恢复采矿退化地区的有效技术。但是，存储时间可能会降低其功能。为了评估存储和添加垃圾的效果，评估了存储（3个月）和非存储表层土壤的物理（微观结构）和化学（肥力）特性。转置后12个月，无论储存时间长短，由于从表土种子库或雨水中募集的植物根系的机械作用以及预先存在的植物碎片的分解，土壤肥力和微观结构均得到改善。废弃物的添加不会影响化学属性，但会影响微观结构的转变。通过重新建立可持续的反馈系统，植被明显促进了成岩演化。