河北临城小天池森林区苔藓植物区系

A BRYOFLORA ANALYSIS OF XIAOTIANCHI,LINCHENG COUNTRY

河北省临城县小天池森林风景区有苔藓植物 2 7科、71属、1 5 6种 (包括 1 1变种、1变型、1亚种 )。其中含 1 0种以上优势科按种数多少依次为丛藓科Pottiaceae、真藓科Bryaceae、灰藓科Hypnaceae、青藓科Brachytheciaceae、柳叶藓科Amblystegiaceae和提灯藓科Mniaceae。初步的区系成分分析表明 ,该地区苔藓植物主要以北温带成分为主 (共计有 85种 ,占总种数的 5 9.44% ) ,其次是东亚成分 (共计有 2 2种 ,占总种数的 1 5 .39% ) ,而各类热带成分仅有 2种。数据说明临城小天池苔藓植物区系具有明显的温带性质。文中对该区系的特点及成因做了初步探讨。

Xiaotianchi of Lincheng Country, located at 37°30′N,114°08′E, in the middle area of Taihang Mountains. The preliminary results show that there are 156 species of mosses, including 11 varieties and 1 form and 1 subspecies, blonging to 27 families and 71 genera known from Xiaotianchi. The number of the families consisting of more than 10 species is 6 and the number of the genera consisting of more than 5 species is 6. The families consisting are Pottiaceae, Bryaceae, Hypnaceae, Brachytheciaceae, Amblystegiaceae and Mniaceae. The genera consisting are Bryum, Brachythecium, Entodon, Hypnum, Barbula and Drepanocladus.The bryoflora in Xiaotianchi of Lincheng Country falls into 9 geographical elements. North temperate element made up the majority, approximating to 59.44% of the entirely known bryoflora in Xiaotianchi, and next comes East Asian element, accounting for 15.39%. All temperate elements, not including 11 Endemic to China and 13 Cosmopolitans, add up to 130 species, which take 83.33% of all the entirely known bryoflora in Xiaotianchi. However, there are only 2 Pantropical elements. To all appearances, the mossflora of Xiaotianchi is provided with obvious temperate characters.