【作者】 康乐； 张爱国； 毛文华； 陈永林；

【Author】 Kang Le Zhang Aiguo Mao Wenhua Chen Yonglin (Institute of Zoology,Chinese Academy of Sciences,Beijing 100080)

【机构】 中国科学院动物研究所； 内蒙古赤峰市元宝山区政府；

【摘要】 本文根据锡林河河滩地不同湿度梯度和植被组成将河滩地划分为4种栖境,并用锡林河流域最具代表性的植物群落一羊草群落做为对照,通过样筐法取样使用对应性分析的方法研究了上述栖境中蝗虫群落组成沿土壤水分梯度变化和植被类型变化的演替规律动态特点。文中指出:在河滩地,土壤含水量是决定蝗虫群落组成差异的主要因素。文中还就不同生境中蝗虫群落的多样性和相似性进行比较研究,并对土壤含水量相近而植被组成相异的栖境中蝗虫群落的趋同现象进行了讨论。更多还原

【Abstract】 A study was conducted to evaluate differences in grasshopper communities along enviromental gradients on the flood land of Xilin River Basin,Inner Mongolia.The flood lands were consisted of 4 kinds of grasshopper habitats on the basis of the gradients of vegetation types and soil moisture.A CK of vegetation was Anerolepedium chinensis steppe which is one of the representative vegetations of typical steppe zone in East Inner Mongolia.The 1m~2 quadrate was used in grasshopper sampling. Grasshoppers were collected at three times each month from early May to late September in 1988,1989.Detrended correspondence analysis (DCA) was selected for analysis of similarities between grasshopper communities,and the relationships with inspecies-habitat.The results showed that the plant and grasshopper species composition changed over envi ronmental gradients and habitat types influenced not only the species presence,but also relative abundance,diversity and equivability.The soil moisture of habitat was proved as a main factor of influence on the changes of grashopper communities in the flood lands.The habitat with similar soil moisture and different plant composition may reside some same species of grasshoppers and possess closer similarities between grasshooper communities.更多还原