内陆盐沼湿地植物多样性研究——以张掖市新墩镇流泉村为例

Study on the plant diversity in inland saline wetland

以新墩镇流泉村内陆盐沼湿地内的芦苇群落和长苞香蒲群落为对象,研究2个群落的植物物种及其组成特征。结果表明:芦苇群落以芦苇为优势种,以滨麦为亚优势种,2者的重要值分别为0.537、0.197;长苞香蒲群落以长苞香蒲为优势种,以芦苇为亚优势种,二者的重要值分别为0.426、0.211;植物群落的多样性指数与丰富度指数的变化趋势基本一致,与生态优势度呈相反的趋势。2个群落间变化差异不显著。

Taking the two most widely distributed communities of Phragmites communis Trin and Typha angustata Bory et Chaub at Liuquan village, Xindun town, Zhangye city as the research objects, this paper studied the plant species and their composition. The results showed that in reed community Phragmites communis Trin was the dominant species and Leymus mollis Trin was the sub- dominant species. Their important values were 0.537 and 0.197 respectively. In cattail community typha angustata Bory et Chaub was the dominant species and the Phragmites communis Trin was the sub-dominant species. Their important values were 0.426 and 0.211 respectively. Diversity index and richness index trend of plant community is consistent with the ecological dominance degree showed the opposite trend. Analysis of variance showed that there were no significant differences between the two communities.