塔里木河下游生态输水对草地恢复的影响

结合塔里木河下游生态输水,通过对植被和地下水的监测,分析了输水对下游草地恢复的影响。结果显示:随着生态输水,塔里木河下游输水河道附近地下水位大幅升高,下游草地也出现明显的生态恢复,主要表现在植被种类和草地覆盖度的变化。但是由于不同草本植物对地下水位的适应程度不同,距河道不同距离植物响应的程度不同。而对于因河水漫溢出现的恢复区,其植被种类和覆盖度表现与因地下水升高而恢复的区域差异较大,说明不同输水方式对草地生态恢复的影响程度不同。

Effects of the Ecological Water Input on Grassland Restoration at the Lower Reaches of Tarim River

According to monitoring to vegetation and ground water after ecological water transport in the recent 3 years,the effect of water input on vegetation restoration is analyzed in this article. The result shows that the groundwater level has risen very obviously after ecological water input.Similarly,the grassland appeared restoration signs in which the coverage and species all increased.The vegetations that appears in different distances from the river have different responses because they are adapted to different groundwaters.However,the vegetation affected by the surface water restored more obvious than those affected by groundwater rising.This may be considered as a more effective way to grassland restoration.