青藏高原四县水生植物群落调查

A STUDY ON COMMUNITIES OF AQUATIC VASCULAR PLANTS IN FOUR COUNTIES IN QINGHAI-XIZANG

青海省玛多县、达日县、甘肃省久治县和四川省阿坝县地处黄河上游，是青藏高原水生植物分布的重要地区之一。此区有水生植物群落9个，它们是蓖齿眼子菜群落、钝叶菹草群落、帕米尔眼子菜群落、圆叶碱毛茛群落、草群落、黄花水毛茛群落、看麦娘群落、曲轴黑三棱群落和西伯利亚蓼群落。在以上群落中有14种水生植物。群落中以北温带分布的植物为主。

Maduo and Dart counties of Qinghai Province, Jiuzhi county of Ganshu Province and Aha county of Sichuan Province are located in upper of river system of Huang He. Above counties an important part of distribution area of aquatic vascular plants in Qinghai-Xizang Plateau. 9 aquatic plant communities distribut in the area, they are Co. Potamogeton pectinatus, Co. Potamogeton amblyophyllus, Co. Potamogeton pamiricum,Co. Halerpestes cymbaria, Co. Beckmannia syziachne,Co. Batranchium bungei var. fovidum, Co. Alopecurus aequalis, Co. Sparganium fatlax, Co. Polygonum sibiricum. Above communities contain 14 species of aquatic vascular plants. North Temperate species in the communities are main distribution type in these communities.