旅游对保护区物种多样性的影响

Effects of Tourismon the Species Diversity of Forest Communityin Longchiman Nature Reserve

采用典型地段取样的方法 ,对河南龙池曼自然保护区旅游步道沿线的群落物种组成、物种种数、物种个体数、高度、盖度、频度进行了调查、采样 ,利用α 多样性指数 ,分析了旅游对物种多样性的影响 .结果表明 :旅游加大了环境异质化过程 ,使群落结构简化 ,物种组成减少 ,群落的α 多样性指数。

Aninvestigationaboutthespeciescomposition ,individualnumber,highness,coverageand frequencyofforestcommunitieswasmadeinLongchimannaturereserveinHenanprovince .In thispaper ,themethodsofimportancevalueandα diversityindexweremeasured .Baseonthese datum ,theeffectsoftourismuponspeciesdiversityofforestcommunitywereanalysied .There sultsshowthattourismmadethecommunitystructuresimplified ,reducedthespeciescomposi tion .Becauseoftraveling ,thelandscapeheterogeneityisbiggerthanbeforeα diversityindexof communitydecreased .