草业学报Issue(5)：224-230,7.DOI:10.11686/cyxb20150526
高原鼠兔有效洞口数密度对高山嵩草草甸植物种间联结性的影响
Effect of burrow entrance densities of plateau pika (Ochotona curzoniae)on interspecific association in Kobresia pygmaea meadow
摘要
Abstract
Changes in the active burrow entrance densities of plateau pika (Ochotona curzoniae )can result in changes in the botanical composition in Kobresia pygmaea meadow which can influence interspecific relation-ships in the meadow.A field survey was carried out to determine the effect of active plateau pika active burrow entrance densities on the interspecific association between the major plant species in K .pygmaea meadow. This study showed that the dominance index for K .pygmaea (dominant species),decreased,while the domi-nance index of associated species including Gentiana dahurica and Anemone rivularis var.flore-minors in-creased as burrow density increased.The overall interspecific association among the main plant species of the K .pygmaea alpine meadow transformed from significantly positive association at 128 and 224 burrow en-trances per ha to a negative association at 368 and 544 burrow entrances per ha.The relationship between K . pygmaea and Carex moorcroftii transformed from positive association at 128 and 224 active burrow entrances per ha to negative association at 368 and 544 active burrow entrances per ha,while associations between Eu-phorbia esula and Elsholtzia densa ,and between Oxytropis ochrocephala and E .esula were negative at 128 and 224 active burrow entrances per ha but positive at 368 and 544 burrow entrances per ha.These results sug-gested that the active burrow entrance densities regulated the overall interspecific association among the main plant species in K .pygmaea alpine meadow,and the interspecific association among the main plant species was strongest and the stability of the alpine meadow community was greatest at 224 active burrow entrances per ha.关键词
有效洞口数密度/种间联结/高山嵩草草甸/高原鼠兔Key words
active burrow entrance densities/interspecific association/Kobresia pygmaea meadow/plateau pika引用本文复制引用
庞晓攀,王倩,贾婷婷,李倩倩,郭正刚..高原鼠兔有效洞口数密度对高山嵩草草甸植物种间联结性的影响[J].草业学报,2015,(5):224-230,7.基金项目
国家自然科学基金（31172258），国家行业（农业）公益项目（201203041）和国家级大学生创新创业项目（821003092）资助。 （）
