围封对荒漠草原植物群落特征的影响

Effects of Enclosure on Plant Community Characteristics in Desert Steppe

为了研究不同围封年限荒漠草原植物群落特征的变化情况,采用常规调查法进行了调查与研究。结果表明,退化草地围封后,多年生草本的优势地位增加,植物群落的地上生物量、草群密度、植株高度和盖度都有所增加;随围封年限的增加物种多样性指数先降低后升高;围栏封育有利于草地植被群落的稳定。

In order to study the changes in the characteristics of plant communities in the desert steppe with different enclosing years, investigations and studies were carried out using conventional survey methods.The study showed that after degraded grassland was enclosed, the superiority of perennial herbs increased, and the above-ground biomass, grass density, plant height and coverage of the plant community had increased. With increased periods of enclosure, the species diversity index decreased first and then increased. Enclosure was beneficial to the stability of grassland vegetation community.