黄河中游(龙门—汾河入黄口)水分因子与湿地植物多样性的相关关系研究

Study on the Relationship between Water Factors and Plant Diversity of Wetland in the Middle Reaches of the Yellow River(Longmen-Fenhe River into the Yellow River Entrance)

以黄河中游(龙门—汾河入黄口)河漫滩湿地生态系统为研究对象,采用系统取样法设置了13个样地,并对各样地内水分因子进行了调查。同时引用山西大学上官铁梁植被生态课题组对以上样地内植物的物种多样性和功能多样性的测度结果,分析了各个多样性指数和水分因子之间的相关关系,并用回归分析的方法进行了验证。结果表明,黄河中游湿地植被的物种丰富度与均匀度受到地下水埋深、土壤含水率的影响,与河流宽度、河岸距离之间不存在显著相关性;黄河中游湿地植被的功能丰富度和功能离散度受到地下水埋深和土壤含水率的影响,功能均匀度与各水分因子之间均不存在显著相关性,河流宽度与河岸距离对功能多样性未造成影响。

A total of 13 plots were set up by systematic sampling method, and the water factors were investigated in the middle reaches of the Yellow River（Longmen-Fenhe into the Yellow River entrance）river floodplain wetland ecosystem. At the same time, the results of the study on the diversity and functional diversity of plants in the above samples were cited from Shanxi University Shangguan Tieliang vegetation ecological task group. The correlation between the diversity index and water factor was analyzed and verified by regression analysis. The results showed that the species richness and evenness of wetland vegetation in the middle reaches of the Yellow River were affected by the groundwater depth and the soil water content, and there was no significant correlation with river width and riverside distance. The functional richness and functional dispersion of wetland vegetation in the middle reaches of the Yellow River were affected by groundwater depth and soil moisture content. There was no significant correlation between functional uniformity and water factor. The river width and riverside distance had no effect on the functional diversity.