植物谷坊的生态恢复效应初探

Preliminary study on ecological recovery effect of plant check dams

沙棘是适宜于干旱、半干旱地区水土保持的植物品种,在内蒙古的北砂岩土水土流失区种植广泛。为揭示沙棘柔性坝对砒砂岩区土壤改良效应和生物群落恢复效应,对用植物谷坊治理后的东一支沟小流域沟道土壤有机质、含水量、植被种类及覆盖度、动物种类及数量等进行了研究。研究结果表明,通过种植沙棘柔性坝,显著地提高了砒砂岩区土壤肥力,涵养了水源,使得濒临崩溃的生态环境得到了较大程度的恢复。

We studied the effect of plant check dams used for gullies in Dongyizhigou small watershed in respects of soil organic matter, moisture content, vegetation types and cover degree, as well as the animal species and the numbers, in order to reveal the effect of the sea buckthom flexible dams on soil improvement and biological community recovery in feldspathic sandstone area. The results show that the sea buckthom flexible dams play an important role in raising soil fertility and conserving water in feldspathic sandstone area and the precarious ecological environment has been greatly recovered.