生态学杂志2017，Vol.36Issue(6)：1614-1621,8.DOI:10.13292/j.1000-4890.201706.001
放牧对沼泽化草甸土壤纤毛虫群落的影响
Effects of grazing on soil ciliate community in swamp meadow
摘要
Abstract
Soil ciliate communities were investigated in a swamp meadow in Maqu,Gannan at three levels of grazing intensity (grazing prohibition,seasonal grazing and full-year grazing).A total of 105 species were identified,belonging to 8 classes,17 orders,30 families and 39 genera.The soil ciliate species diversity index was the highest under seasonal grazing,followed by grazing prohibition and the lowest under full-year grazing.The C/P index (the ratio of species number of Colopodid ciliates to species number of Polyhymenophora ciliates) was in order of seasonal grazing ＜ grazing prohibition ＜ full-year grazing.The ciliate communities had higher similarity between the sites of grazing prohibition and seasonal grazing and there were larger differences of ciliate communities between the sites of full-year grazing and grazing prohibition.Furthermore,soil moisture and organic matter content were significantly positively correlated with species number,density and diversity index (P＜0.01);total phosphorus content was significantly positively correlated with density (P＜0.01),species number and diversity index (P＜0.05).The redundancy analysis of ciliate community composition parameters (species number,species diversity index,density) and soil environmental factors (soil temperature,moisture,pH,organic matter,total nitrogen,total phosphorus,available phosphorus and inorganic nitrogen) showed that organic matter content had the greatest impact on the community composition of soil ciliates,followed by soil moisture,and total nitrogen content.关键词
放牧强度/土壤纤毛虫/群落组成Key words
grazing intensity/soil ciliates/community composition引用本文复制引用
宁应之,杨元罡,苏苌,陈凌云,杜国祯..放牧对沼泽化草甸土壤纤毛虫群落的影响[J].生态学杂志,2017,36(6):1614-1621,8.基金项目
国家自然科学基金项目(41361055、40930533)资助. （41361055、40930533）
