呼伦贝尔草甸草原自然保护区不同干扰下群落特征研究

Study on human interfered plant community characters in Hulunbeir steppe nature reserve

以呼伦贝尔草甸草原自然保护区作为研究样地,对羊草群落、贝加尔针茅群落在不同干扰下的群落特征进行研究。结果表明:刈割可以增加两个群落的物种数、群落密度,以及羊草群落盖度;放牧可以增加两个群落的群落高度、贝加尔针茅群落盖度与地上生物量,且受到干扰后物种重要值没有明显变化,群落较为稳定。关于不同干扰对草甸草原自然保护区群落特征的影响,还需进行更加深入细致的研究,从而将各种干扰有机地结合起来,对草甸草原自然保护区进行合理的保护与适度的利用。

This paper is about a research on the characters of the herd- forage grass community and the Baygal Stipa community, which are interfered by varies kinds of factors within the Hulunbeir Meadow Steppe Nature Reserve. The research shows that mowing can increase the number of species, the dense of community and the Area covered by the herd- forage grass community; Grazing can increase the height of community, the coverage of Stipa community and the population of life form in the area. Moreover, the community remains stable, while the important values of species are not changed by the human interferes. More accurate research is required for better understanding of the influence from human interference on the Community characters in the Prairie Nature Reserve, thus the factors can be well arranged so as to achieve a better protection and utilization.