科尔沁沙地不同生境条件下大型土壤动物群落多样性特征研究  

The Features of Macrofauna Community Biodiversitiy Under Different Habitats in Horqin Sandland

作　　者：刘新民[1] 

机构地区：[1]内蒙古师范大学生命科学与技术学院,内蒙古呼和浩特010022

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2008年第1期98-103,共6页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：内蒙古自然科学基金资助项目(200208020503)

摘　　要：研究了科尔沁沙地大型土壤动物群落在沙地环境演变过程中的多样性特征.结果表明,在自然情况下,两类生境的转变过程较为缓慢.由半固定沙地向固定沙地的转变过程中,大型土壤动物群落多样性有提高趋势,群落结构趋于复杂化.其中,植食动物和腐食动物的类群数和密度明显增加,捕食动物的类群数尽管没有明显变化,但一些主要类群的密度增加却很突出.与固定沙地和沙质草甸相比,农田中大型土壤动物群落多样性降低,类群数、动物密度减小,腐食动物的类群数增加.因此,在科尔沁沙地开垦和利用农田需要慎重对待.Fixed sandland and semi-fixed sandland are the typical stages of sand environment succession in Horqin sandland. Under the natural conditions,the process of the succession is relative slowly. The communities of macrofauna are of great complexity. Different macrofauna groups have different ecological functions in ecosystem. In succession of semi-fixed sandland to fixed sandland,the density and the number of phytophagous and saprozoic macrofauna groups are increased, Though the number of predatory macrofauna groups is not increased, the density of the mainly predatory macrofauna groups is obviously increased. Comparing with fixed sandland and sandy meadow, the biodiversity of macrofauna community in farmland is relative lower. All the density and number of groups of macrofauna are decreased while the number of saprozoic macrofauna groups is increased. So we must treat the reclaiming and using of sandland in Horqin sandland region carefully.

关 键 词：科尔沁沙地 大型土壤动物 群落多样性 

分 类 号：Q958.1[生物学—动物学]