生态环境学报2018，Vol.27Issue(5)：827-833,7.DOI:10.16258/j.cnki.1674-5906.2018.05.005
贵州草海湿地空心莲子草入侵迹地植物群落结构数量特征
The Plant Community Structure and Quantitative Features after the Invasion of Alternanthera philoxeroides in Caohai Wetland of Guizhou Province
摘要
Abstract
As an important karst alpine wetland ecosystem in southwestern China, the Caohai wetland is one of the hibernacula of rare waterfowls,such as Grus nigricollis.However,Alternanthera philoxeroides in the Caohai wetland,has formed an invasion trend in the water fluctuation belt, waterway and wharf, resulting in the decrease of plant species diversity, the destruction of wetland ecosystem stability and the serious threat to the ecological safety in this area. This paper, based on the standard plot method, taking the plant community in Caohai wetland of Guizhou after the invasion of Alternanthera philoxeroides as the research object, by selecting the mild, moderate and severe sample plots according to the invasion of different extents in the upper, middle and lower reaches respectively, analyzed the plant community composition, population density, important value and other quantitative characteristics in the investigated spots, presented the cultivation direction of plant community after removing the Alternanthera philoxeroides,which would provide reference for the restoration of plant invasion area in Caohai wetland.The results showed that:(1)In the Alternanthera philoxeroides invasion area,the plant community was composed of 9 families with 15 species,including 4 species of Gramineae plants, 3 species of Cyperaceae plants, 2 species of Polygonaceae plants, Asteraceae, Amaranthaceae, Typhaceae, Menyanthaceae, Labiatae, Equisetaceae plants were 1, respectively. (2) The total density of plant communities in the upper reaches of the wetland was proportional to the degree of invasion, while it was inversely proportional in the middle or lower reaches of the wetland. And (3) the suboptimal and companion species were mainly Leersi ahexandra, Zizania latifolia of Gramineae,Scirpus validus and Scirpus fluviatilis of Cyperaceae in the Alternanthera philoxeroides invasion area.It should give priority to cultivating the plants of Leersi ahexandra,Zizania latifolia,Scirpus validus and Scirpus fluviatilis after suppressing the Alternanthera philoxeroides.关键词
草海湿地/空心莲子草/入侵迹地/植物群落Key words
Caohai Wetland/Alternanthera Philoxeroides/the invasion of land/plant community分类
生物科学引用本文复制引用
张建利,蔡国俊,吴迪,李振吉,王加国,易武英,涂声蕾,陶红梅..贵州草海湿地空心莲子草入侵迹地植物群落结构数量特征[J].生态环境学报,2018,27(5):827-833,7.基金项目
贵州省科技重大专项(黔科合重大专项字[2016]3022-03号) （黔科合重大专项字[2016]3022-03号）
贵州省林业科研课题(黔林科合J字[2012]11号) （黔林科合J字[2012]11号）
