围栏封育对甘南高原高寒草地植被群落特征的影响

Influence of fencing enclosure on the vegetation community characteristics of alpine meadow in Gannan Plateau

为了初步探索围栏封育对甘南高原高寒草甸草原植被群落特征的影响,本试验通过植被群落特征指标的对比研究,发现经围栏封育后,植被植株的平均高度、草地生物量围栏内均比围栏外显著增加,围栏内物种数也较围栏外有所增加,围栏内优势种各项植被特征指标明显多于围栏外,且呈极显著差异,但毒杂草类在植被株高和产量上围栏外高于围栏内,群落密度差异不显著。由此可见,围栏封育对甘南高原高寒草甸草地退化的恢复和建设有重要作用。

In order to explore the influence of fencing enclosure on the vegetation community characteristics of alpine meadow,the characteristics of vegetation communities were comparative studied.It was found that the average height of vegetation plants was significantly increased after the enclosure by fence.The number of species was also increased.Dominant species of vegetation characteristics were significantly more.However,the height and yield of poisonous weed species were less than outside of the fence,and the vegetation community density difference was not significant.Thus fencing enclosure plays an important role in the restoration and construction of alpine meadow grassland degradation.