青藏高原东缘理塘县水生植物群落

青藏高原东缘理塘县水生植物群落 ON COMMUNITIES OF AQUATIC VASCULAR PLANTS IN LITANG COUNTY IN EAST MARGIN OF QINGHAI-XIZANG PLATEAU 赵佐成 Zhao Zuocheng 1 first-author 中国科学院成都生物研究所,成都,610041 中国科学院成都生物研究所,成都,610041 Chengdu Institute of Biology, Academic Sinica Chengdu Institute of Biology, Academic Sinica 理塘县位于青藏高原东缘,界于29°～30°41′N,99°20′～100°15′E之间,平均海拔为3900m以上,野外调查表明,境内计有10种水生植物群落,其中挺水植物群落6种、沉水植物群落4种。挺水植物群落分布广,为区内的主要湖泊水生植物群落,其生长水域具有随季节而涨落变化的特点。此地的水生植物群落与长江中下游湖泊水生植物群落不同与云南高原湖泊的水生植物群落也有较大的区别。群落多校性较为丰富,特殊性较为鲜明。 Li Tang County,located in east margin of Qinghai-Xizang Platenu,99°20’-100°15’E,29°00’-30°40’N,is on an average of 3 900 m above sea level. Through an extensive investigation in the field in summer 1992,there are ten communities of aquatic plants includ-ing six emergent and four submerged ones recognized. Ecological factors and community fea-tures are discribed for every plant community. The wide distribution of emergent plant com-munity shows that it is a main community of aquatics in the area. It grows mostly in those water changing in depth with seasons frequently. A comparision among communities of Li Tang,lakes of lower-middle Yangzi River and laker of Yunnan Plateau shows that in the for-mer,community varirety is abundent and comunity speciality is obvious. 青藏高原东缘 理塘县 水生植物群落 east margin of Qinhai-Xizang Plateau Li Tang County aquatic vascular plant community Q948.158 国家自然科学基金资助的课题 1994-05-01 2021-04-01 5