摘要
以五台山南台为例,利用生态位的宽度指数,研究了草甸种群对旅游干扰的生态响应。结果表明:(1)紫羊茅、珠芽蓼和北方嵩草的生态位宽度较大,是群落的建群种。随着距离的增加,旅游干扰减小,不仅物种的数量越来越多,而且其生态优势也趋于增强,说明旅游干扰限制了种群对其周围资源的利用。其中,紫羊茅的相对优势在下降,而北方嵩草的相对优势却不断增强。(2)两种划分方法表明,北方嵩草、雪白委陵菜、零零香、歪头菜、小红菊和兰花棘豆是增长型的种类;扁蓄是衰退型的种类;地榆是波动型的种类。
The ecological response of subalpine meadow population to tourism disturbance on subalpine meadow on the south top of Wutai Mountain is studied by the index of niche breadth in the paper. It shows that： （1） the niche breadth of Festuca rubra, Pocygonaceae viviparum and Kobresia bellardii is more,and they are dominant species in the community. With the distance increase, tourism disturbance is weakening, species number is adding up, and their niche breadth is targening, which indicates that population is confined to the surroundings by the disturbance. The relative dominance of Festuca rubra decreases, and that of Kobresia bellardii increases. （2） Kobresia bellardii , Potentilla nivea , Anphalis henecockii , Vicia unijuga , Dendrantherna chanetii and O.rytropis caerulea belong to the increasing type, Polygonum aviculare belong to the decreasing type, and Sanguisorba officim is one of the fluctuating type.
出处
《水土保持研究》
CSCD
北大核心
2008年第6期222-224,共3页
Research of Soil and Water Conservation
基金
国家自然科学基金资助项目(40701175)
关键词
五台山南台
草甸种群
旅游干扰
生态位的宽度
the south top of Wutai Mountain
meadow population
tourism disturbance
niche breadth
