The reason is that the quality and function of current forest can not match the natural primeval forest with perfect soil conservation effectiveness.Because unitary surface material and less land surface roughness which can not retain runoff lead to short
The reason is that the quality and function of current forest can not match the natural primeval forest with perfect soil conservation effectiveness.Because unitary surface material and less land surface roughness which can not retain runoff lead to short
原因是目前的森林质量和功能都无法与具有水土保持功能的原始森林相比，其地表组成物质太少且单一，地面粗糙度低，起不到对地表径流的阻挡作用，致使地面径流汇流时间缩短，洪水下泄快并容易形成洪水叠加，导致洪涝灾害加剧。