浙江箬寮岘自然保护区种子植物区系分析

浙江省箬寮岘县级自然保护区野生种子植物有141科662属1 475种(含种下分类等级)。根据自然保护区环境条件,通过对种子植物种类的组成和地理成分的分析,并与浙江省其他自然保护区比较,认为箬寮岘自然保护区植物区系的种类丰富,起源古老,区系成分复杂。泛热带分布(20.9%)、北温带分布(19.7%)、东亚分布(16.1%)、热带亚洲分布(9.1%)和东亚-北美间断分布(8.8%)等5个类型是组成箬寮岘种子植物区系的主要成分,温带性属(52.2%)和热带性属(45.4%)所占比例大体相当。该区系是典型的亚热带植物区系,具有由热带性区系成分向温带性区系成分过渡的特点。同时,该区国家重点保护植物和珍稀濒危植物种类多,具有较高的保护价值。表5参14

Spermatophyte flora of Ruoliaoxian Nature Reserve in Zhejiang

There are 141 families,662 genera and 1 475 species(including subspecies,varieties and forms) of wild spermatophye in Ruoliaoxian Nature Reserve in Songyang County,Zhejiang Province.The study indicates that the spermatophye flora has rich species,and many endemic and rare plants.Its origin is from far ancientry,and the floristic elements are complex and varied.At generic level,the pantropic type is 20.9%,the north temperate type is 19.7%,the east Asia type is 16.1%,the tropical Asia type is 9.1%,and east Asia & north America disjuncted type is 8.8%, those types are main elements of the flora.The rate of temperate elements is 52.2% and the ratio of tropical ones is 45.4%,so this is a typical subtropical characteristics of the flora with the transitional characters from tropical to temperate.There are more than 80 species of key state protection or endemic to China.