闽江河口湿地植物与土壤灰分及其影响因子分析

以闽江河口鳝鱼滩湿地生长的芦苇(Phragmitesaustralis)和互花米草(Spartina alterniflora)为研究对象,并对相应的36个土壤剖面进行取样分析,揭示它们的(厂火)分含量分布特征,并对其影响因子进行分析。研究结果表明:闽江河口鳝鱼滩湿地芦苇和互花米草各个器官(厂火)分含量的差异性明显,芦苇各部位(厂火)分含量的平均值大于互花米草;芦苇和互花米草湿地土壤(厂火)分含量的垂直分布较为类似,芦苇湿地土壤(厂火)分合量略高于互花米草湿地土壤(厂火)分含量,但两种植物土壤(厂火)分含量的差异并不显著;芦苇和互花米草湿地土壤(厂火)分含量与土壤有机碳有极其显著的负相关关系,与土壤含水量的相关性也较明显;从单一的植物类型来看,互花米草湿地土壤(厂火)分含量与容重、碳含量、含水量和盐度呈显著的相关关系,芦苇湿地土壤(厂火)分含量与土壤pH值有明显的正相关关系。

Analysis of plant and soil ash content and influencing factors in Wetland of Min River Estuary

This paper dealt with Phragmites australis and Spartina alterniflora growned in the Shanyutan Wetland of Min River Estuarine, and analyzed 36 corresponding soil profiles, in order to reveal the distributed characteristic of the ash content of them and analyze influencing factors. The results showed that the differences of ash content of various organs were obvious,and the averaged value of each modules ash content of Phragmites australis were bigger than that of Spartina altemiflora;The vertical distribution of the soil ash content under the two plants were similar. The soil ash content in the wetland of Phragmites australis was slightly higher than that of the wetland of Spartina altemiflora. However, the differences of the soil ash content under the two plants were not remarkable;The soil ash content of the two kinds of wetlands and the soil organic carbon existed significant negative correlation ,and the correlation with the soil moisture was also obvious;Viewed from a single type of plant, the soil ash content of Spartina altemiflora wetland was greatly related to the bulk density, the carbon content, the moisture and the salinity, and the soil ash content of Phragmites australis wetland was greatly related to pH.