宁夏干旱区甘草不同采挖方式及强度对植物群落恢复及稳定性的影响

Effect of Different Digging Ways and Intensities of Licorice on Plant Community Restoration and Stability in Arid Area of Ningxia

针对近些年来野生甘草因滥采、乱挖导致草场大面积退化的现象,通过研究野生植物资源甘草不同采挖利用强度对土壤风蚀、养分、植物群落结构特征以及植物多样性变化的影响研究,结果表明:对野生甘草的采挖采用点挖方式要好于条挖,对恢复区植被破坏较小,恢复期短,且以秋末冬初采挖最好。

Aiming at the phenomenon of the degradation of large area of grassland caused by excessive digging of wild licorice during recent years,a study was conducted on the effect of different digging intensities of wild plant resources licorice on soil erosion,nutrient,plant community structure and plant diversity change.The result showed that point digging was better than strip digging for collecting of wild licorice In this way the damage to the vegetation of restoration area was small and the restoration period was short.In addition,the best time to dig wild licorice is late autumn and early winter.