摘要
研究了不同放牧强度下内蒙古典型草原蛴螬群落特征的变化.结果表明,研究区蛴螬群落组成以黑皱鳃金龟为优势种,弓斑常丽金龟为次优势种.在不同放牧强度下,蛴螬群落动态主要表现为常见种和稀有种的增减,优势种基本不变.随着放牧强度的提高,蛴螬群落的密度、群落多样性、均匀性、物种丰富度,以及成虫和幼虫密度比值呈下降趋势.
From 1992～1995,the effects of experimental grazing pressures on the community of Scarabaeoidea Larvae in Inner Mongolia typical steppe was studied.In the research region,the dominant species was Trematodes tenebrioides(pallas),and the subdominant species was Cyriopertha arcuata(Gebler). With the increase of grazing pressures,the constructions of Searabaeoidea Larvae Community simplified,but the dominant species did not changed and the density,biodiversity,evenness of Scarabaeoidea Larvae Community decreased.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
2002年第4期379-383,共5页
Journal of Inner Mongolia Normal University(Natural Science Edition)
关键词
内蒙古典型草原
放牧强度
蛴螬群落
群落特征
Inner Mongolia typical steppe
grazing pressure
Scarabaeoidea Larvae Community
features of the community
