旅游干扰对梭布垭石林木本植物组成及区系成分的影响

Tourism Effect on Woody Plants Species Composition and Woody Plant Flora in Suobuya Stone Forest

对梭布垭石林旅游区在旅游干扰下木本植物的种类组成和区系进行了研究.调查区内有木本植物108种隶属52科85属,其中以单属科和寡属科占优势.植物地理成分以热带和温带成分居多,具亚热带向温带过渡的特点.随着干扰程度的加剧,热带成分的科呈现增加的趋势,物种数量也随干扰强度加大而增多.中度干扰区比对照区增加了11科16属21种.杉木和马尾松是旅游区内出现频度最高的树种,占据乔木层和灌木层.林中其他乔灌木树种也都表现出喜光的特性,尤其是中度干扰区内的物种多为阳性树种,表明受干扰以后阳性植物的入侵几率加大.

This paper discussed the woody plants species composition and woody plant flora under tourism disturbance in Suobuya Stone Forest of Enshi County.According to the investigation,there were 52 families,85 genera and 108 species of woody plants.Monotypic and oligotypic genera and families were dominant in Suobuya Stone Forest.The temperate and tropical elements of woody flora were dominant and it showed the transitional natures from tropic to temperate.The numbers of tropical elements families and the numbers of wood plants species increased with increasing of traveling disturbance degree.The woody plants species in intermediate disturbance plot increased 11 families,16 genera and 21 species contrasting that of control plot.Cunninghamia lanceolata and Pinus massoniana were the main species which were the frequency of application in disturbance and inhabited in arbor layer and shurb layer.The other wood plants species showed the photophilic characteristic,especially in intermediate disturbance plot.It showed that light demander had the much probalities to intrude into the disturbed samples.