土壤活水层:废弃道路生态恢复的关键

Soil Active Water Layer: the Key to Ecological Restoration of Abandoned Roads

许多自然保护区面临废弃道路生态恢复问题。某自然保护区完全封禁后,区内沙石道路覆土栽植油松,但长势衰弱。通过理论分析,提出土壤活水层概念,指入渗蓄存天然降水供应植物生长发育的有效土层,圆满解释了沙石道路覆土栽植油松长势衰弱的现象。提出废弃道路生态恢复的关键在于破碎透水性能微弱的路基,形成多种多样的缝隙,有效增加活水层厚度。

Many nature reserves are faced with the problem of ecological restoration of abandoned roads. After a nature reserve was completely closed, the road covered with sand and stone was planted with Pinus tabulaeformis, but the growth was weak. Through theoretical analysis, the concept of soil active water layer is put forward, which refers to the effective soil layer where natural precipitation is stored by infiltration to supply the growth and development of plants. It is pointed out that the key to the ecological restoration of abandoned roads lies in the roadbed with weak permeability, forming various gaps and effectively increasing the thickness of fresh water layer.