不同放牧强度对内蒙古典型草原蛴螬群落特征影响的研究  

INFLUENCE OF DIFFERENT STOCKING RATES ON SCARABAOIDEA LARVAE COMMUNITY IN INNER MONGOLIA TYPICAL STEPPE

作　　者：乌宁[1] 刘新民[1] 郭砺[2] 刘永江[1] 

机构地区：[1]内蒙古师范大学生物系,内蒙古呼和浩特010022 [2]内蒙古大学生命科学学院,内蒙古呼和浩特010021

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2002年第4期379-383,共5页Journal of Inner Mongolia Normal University(Natural Science Edition)

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.

关 键 词：内蒙古典型草原 放牧强度 蛴螬群落 群落特征 

分 类 号：Q968.1[生物学—昆虫学]