滦河上游地区藓类植物区系的初步研究

于2001~2005年在滦河上游地区共采集藓类植物标本1 810份,并对标本进行了整理鉴定.分析结果表明,滦河上游地区共有藓类植物27科75属175种1亚种12变种2变型,分别占全国藓类植物科、属、种(含种下分类单位)总数的41.54%、18.16%和7.74%.其中,河北省藓类植物新纪录6种1变种.该地区的优势科为丛藓科、柳叶藓科等6科,优势属为真藓属、青藓属等11属.该地区藓类植物可划分为10种区系成分,北温带成分居各种区系成分的首位,占该区系总种数的64.42%,东亚成分次之,占13.50%.该区系中温带性质的的种共计158种,占整个区系总种数的83.16%,而热带性质的种仅5种,显示了该地区藓类区系显著的温带性质.

Preliminary Study of Moss Flora in the Upper Reaches of Luanhe River

In 2001-2005,1 810 specimens of mosses were collected in the upper reaches of Luanhe River and identified. It was shown that there are two forms,12 varieties,1 subspecies,175 species,75 genera and 27 families of mosses in the upper reaches of Luanhe River and the numbers of the families,genera and species separately make up 41.54%,18.16% and 7.74% of the totals in China. Hcrein,there are one form and six species that have been founded in Hebei Province for the first time. In the region,there are six dominant families including Pottiaceae and Amblystegiaceae, and 11 dominant genera including Brachythecium and Bryum. In the region,the mosses can be divided into ten floral elements of which the northern temperate element ranks the first accounting for 64.42% ,the East Asia element take the second place accounting for 13.50%. In the region,the species that are temperate elements total 158 accounting for 83.16% of the species total and the species that are tropical elements number 5,which indicates the moss species are significantly temperate in the region.