黄河首曲——玛曲湿地沼生植物的群系分类研究  

Study on the Classification and Formation of Marsh Plants in Maqu

作　　者：张怀山[1] 张吉宇[2] 乔国华[1] 王春梅[1] 张茜[1] 杨晓[1] 

机构地区：[1]中国农业科学院兰州畜牧与兽药研究所,兰州730050 [2]兰州大学草地农业科技学院,兰州730000

出　　处：《湖北农业科学》2011年第5期924-926,共3页Hubei Agricultural Sciences

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(BRF090202)

摘　　要：黄河首曲—玛曲湿地是青藏高原东部湿地面积较大,植物群落特征明显,最原始、最具代表性的高寒沼泽湿地。玛曲湿地沼生植物的群落类型可分为莎草沼泽和杂类草沼泽2大类共4个群系。建群种分别为华扁穗草(Blysmus sinocompressus)、裸果扁穗苔草(Blysmocarex nudicarpa)、槽秆荸荠(Eleocharisvalleculosa)和两栖蓼(Polygonum amphibium),亚建群种主要有褐鳞苔草(Carex brunnescens)、沿沟草(Catabrosa aquatica)、甘肃嵩草(Kobresia kansuensis)、两栖蓼和火绒草(Leontopodium alpinum)等多种植物。群落总盖度在5%～90%之间;主要分布在河道洼地、河漫滩、沟谷洼地、阶地陡坎洼地、沟源洼地等常年积水的地方,地下水位埋深大都在20～30 cm。Maqu,the first bay of Yellow river,located in the east of Tibetan Plateau,which was the most representative and primitive alpine wetland with more wetland area and obvious plant community character.The marsh plant communities in Maqu could be classified into 4 formations,belonging to 2 types（sand and wetland）.The constructive species were as follows： Blysmus sinocompressus,Blysmocarex nudicarpa,Eleocharis valleculosa,Polygonum amphibium,etc.The constructive sub-species were as follows： Carex brunnescens,Catabrosa aquatica,Kobresia kansuensis,Polygonum amphibium,Leontopodium alpinum,etc.The total community coverage was 5%～90%.The formation plants was found in perennial water standing areas,such as channel depressions,river floodplains,valley depressions,terrace scarp depression and so on,and the ground water level was about 20~30 cm.

关 键 词：湿地 沼生植物 群系分类 玛曲 

分 类 号：Q948.15[生物学—植物学]