东乌珠穆沁旗造纸厂废水迹地草地植被调查

摘要

Abstract:In order to understand the sustainability of the influence and harm,plant community was investigated in 2011 using the method of line transect-sample plots for the grassland damaged seriously by the waste water of paper mill in East Ujimqin Banner.Results showed that the plant community had a few species (33 spp.),less diversity,lower community height (15.01 cm) and sparser coverage (14.31％).There were more annual and fewer perennial plant species survival in the center of tested grassland.In the center area,Suaeda glauca-Nitraria tangutorum was a dominant community and community mean important value was 58.87.There were also large patches of bare ground.The vegetation was still in a severely degenerate state and not yet recovered effectively.%针对内蒙古东乌珠穆沁旗造纸废水污染致使草地植被严重退化问题,于2011年采用样线-样方调查方法对该造纸厂废水迹地草地植被进行了调查,以了解废水污染对草地植被的影响程度及危害的持续性.结果表明:废水迹地植物数量少,仅有33种,多样性低；迹地中心群落高度(15.01cm)和盖度(14.31％)小.距离废水迹地中心越近,一年生植物越多,多年生植物越少.迹地中心主要为碱蓬(Suaeda glauca)-白刺(Nitraria tangutorum)-群落,重要值高(58.87),并存在成片裸地.废水迹地草地植被仍处于严重退化状态,远未有效恢复.