东平湖湿地不同土地利用方式草本植物特征分析

The Analysis of Herbaceous Plant Characteristics under Different Land Utilization Regimes in Dongping Lake Wetland

以东平湖湿地展营人工林和老湖人工林、展营原生湿地和陈山口原生湿地、展营弃耕地和稻屯洼弃耕地为研究对象,以样方法调查各土地利用方式下的植物群落,分析各个利用方式下的物种组成、优势种变化以及各个物种的盖度、密度和高度特征.结果表明,不同土地利用方式下东平湖湿地共有51个草本植物物种组成,分别隶属于20科38属,其中展营原生湿地物种数最丰富,展营人工林次之,弃耕地最为贫乏.各土地利用方式下的优势种不同,且主要伴生种也差异较大.草本植物的盖度、密度和高度因土地利用方式不同亦均有明显差别,原生湿地下草本植物的盖度、密度和高度都最为优势.由此可知,东平湖湿地不同土地利用方式及利用程度严重影响着草本植物的物种组成及其生长特征.

A study was conducted to analyze species composition, changes in dominant species, coverage, density and height in Dongping lake wetland under different land utilization regimes. Zhanying plantation and Laohu plantation, Zhanying original wetland and Chenshankou original wetland, Zhanying derelict land and Daodunwa derelict land were used as the study objects. Results showed that, a total of 51 plant species, belonging to 20 families and 38 genera, were recorded in Dongping lake wetland under different land utilization regimes. The plant species in the Zhanying original wetland was the most abundant, followed by the Zhanying plantation, and derelict land was the tx;orest. Dominant species under all the land utilization regimes were different, and the main accompanying species also differed greatly. Herbaceous plants＇ coverage, density and height had significant differences because of different land utilization regimes, and the coverage, density and height of herbaceous plants under original wetland were the most dominant. It thus emerged that different land utilization regimes and land use degree significantly affect species composition and growth characteristics of the herbaceous plants in Dongping lake wetland.