鄱阳湖洲滩湿地优势植物生态位特征研究  被引量:2

Niche of Dominant Populations of Wetland Plants in Islets of Poyang Lake

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作  者:陈明华[1] 赵安娜[1] 刘以珍[1] 

机构地区:[1]南昌大学生命科学与食品工程学院,江西南昌330031

出  处:《科教文汇》2012年第34期82-84,共3页Journal of Science and Education

摘  要:对鄱阳湖洲滩湿地优势植物种群进行基于植物特征的生态位研究,主要分析糙叶薹草、灰化薹草、水田碎米荠等22种优势湿地植物的生态位宽度和生态位重叠。糙叶薹草(0.292)、灰化薹草(0.258)等具有较宽的生态位,单性薹草(0.024)、鸡眼草(0.022)具有较窄的生态位;有105种对发生生态位重叠,占具有生态位重叠的湿地植物物种种为45.5%,生态位重叠值大于0.5的湿地植物物种对有卵碎薹草和蚕茧蓼(0.797)、芫荽菊和蓼子草(0.674)、牛鞭草和鸡眼草(0.630)、蓼子草和蔊菜(0.550)、水田碎米荠和蔊菜(0.538)、牛鞭草和野古草(0.525)、糙叶薹草和糙毛蓼(0.522)。This paper investigates on niche of dominant popula- tions of wetland plants in islets of Poyang Lake, mainly analyzes the niche breadth and niche overlap of 22 dominant wetland plants, such as Carex scabrifolia Steud.s, Carex cinerascens K ti kenth, Cardamine lyrata Bunge, and so on. Niche breadth characteristics: Carex scabrifolia Steud.s (0.292), Carex cinerascens K ti kenth (0.258) has a wide niche, Carex unisexualis C. B. Clarke. (0.024), Kummerowia striata (Thunb.) Schindl. (0.022) has a narrow niche; 105 kinds species have niche overlap, the niche overlap wetland plant has 45.5%, wetland plants has niche overlap values more than 0.5: Carex ovatispiculata Y. L. Chang ex S. Yun Liang and Polygonum japonicum Meisn.(0.797), Cotula anthemoides Linn. And Polygonum criopolitanum Hance (0.674), Hemarthria ahissima (Poir.) Stapf et C. E. Hubb. and Kum- merowia striata (Thunb.) Schindl. (0.630), Polygonum criopoli- tanum Hanee and Rorippa indica (Linn.) Hiern (0.550), Car- damine lyrata Bunge. and Rorippa indica (Linn.) Hiern (0.538), Hemarthria altissima (Poir.) Stapf et C. E. Hubb. and Arundinella anomala Stend. (0.525), Carex scabrifolia Steud.s and Polygonum strigosum R. Br. (0.522).

关 键 词:鄱阳湖 湿地植物 生态位宽度 生态位重叠 

分 类 号:Q948[生物学—植物学]

 

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