摘要
采用双向指示种分析（ＴＷＩＮＳＰＡＮ）多元等级分划分类方法和无趋势对应分析（ＤＣＡ）排序方法，对草海湖泊水生植物群落的空间分布及演替动态进行了研究，并以分类结果为基础，计测了典型群落的群落位，用来探讨植物群落在水分梯度上的渐变过程。结果表明，草海湖相植物系列随着水分梯度的变化，呈现出有规律的替代性，群落带状分布十分明显；水生群落多为单优势种群落，组分种少，结构简单；内源性富氧化是水生群落演替的主要动力之一；人类活动对湖区景观格局和植物种群动态有着深刻的影响。
he spatial distribution pattern and successive dynamics of aquatic plant community in the Caohai Lake were studied with the methods of TWINSPAN classification and DCA ordination. The successive change of plant community with the water gradient was examined by measuring the coenoniche of typical community based on the results of classification. The results indicated that (1) the lake succession series presents a regular substitution and clear zonal distribution with the water gradient; (2) many communities are dominated by one or two species and have simple spatial structures; (3) the deposition of hydrophyte itself is the main successive force of community; (4) the human activities have great influences on the lake landscape and plant population dynamics.
出处
《草业学报》
CSCD
1998年第2期23-33,共11页
Acta Prataculturae Sinica
关键词
草海
植被演替
TWINSPAN
DCA
水生植物
Caohai, succession, plant community series of lake, plant community series of ditch, TWINSPAN, DCA, coenoniche
