【摘要】 分析研究了 3种不同人工灌木林地在草原露天矿区排土场边坡的水土保持效益和对周围环境的影响 ,结果表明 :山杏和丁香两种人工林生长缓慢 ,很难在短时间形成郁闭灌丛 ,而沙棘可以迅速形成郁闭度很高的人工林 ,护坡和土壤培肥作用显著。露天矿区排土场的形成将会根本改变其周围地区的土壤环境和植被类型。如无有效措施 ,坡下汇水区土壤将发生盐碱化 ,植被向耐盐的水生和湿地植物群落演替 ,但护坡的人工沙棘林能明显改善坡下的土壤条件 ,使植被向中生的喜肥植物群落演替。因此 ,利用人工沙棘林护坡 ,排土场坡下汇水区加以农业综合利用 ,应该作为草原露天矿区土地复垦的一种模式更多还原

【Abstract】 The effects of 3 different artificial boskages on soil and water conservation and its environmental impact in the slope of refuse dump in steppe region were studied. The results showed that: the growth of both Prunus armeniaca and Syringa oalata is slow,they can not formed a closing boskage within a short period. But Hippophae rhamnoides could rapidly grow up into artificial boskage with high canopy density, and its benefit on soil and water conservation was very obvious. The appearance of refuse dump evidently has changed the soil and vegetation situation around it. If without effective control, the soil under the slope will salinate, the succession of vegetation turn to community of hydrophyte or salt resistant plants. But the artificial boskage of Hippophae rhamnoides planted in the slope of refuse dump can improve the soil condition under the slope, and conduce to growth of communities with mesic and fertilizer favor plants, which should be applied as a restoration model in steppe region.更多还原