2016年闽江河口潮滩土壤有效硅含量和储量

Available Silicon Content and Storage in Soil in the Min River Estuary in 2016

为了研究闽江河口湿地土壤有效硅含量和储量的分布,在闽江河口鳝鱼滩湿地的芦苇(Phragmites australis)群落生长区、短叶茳芏(Cyperus malaccensis)群落生长区和芦苇+短叶茳芏群落生长区中,设置采样地,在2016年每月的18~24日中的某一日,采集0~60 cm深度的土壤样品,测定土壤有效硅含量并计算其储量,分析土壤有效硅含量和储量的变化特征。研究结果表明,2016年,闽江河口短叶茳芏群落生长区各月0~60 cm深度各土层土壤有效硅质量比平均值相对最大,为441.51 mg/kg,芦苇+短叶茳芏群落生长区(404.14 mg/kg)和芦苇群落生长区(322.92 mg/kg)土壤有效硅含量平均值依次减小;短叶茳芏群落生长区0~60 cm深度土壤有效硅储量相对最大,为238.37 g/m^2,芦苇+短叶茳芏群落生长区(226.36 g/m^2)和芦苇群落生长区(170.43 g/m^2)的0~60 cm深度土壤有效硅储量依次减小。

To investigate the distribution of available silicon content and storage in soils in the Min River estuary, sampling sites were set in the growth areas of Phragmites australis community, Cyperus malaccensis community and Phragmites australis+Cyperus malaccensis community, soil samples at 0-60 cm depth were collected from January to December in 2016. The available silicon contents in the soil were determined, and the storages were calculated. The results showed that the mean available silicon content in soils in the growth areas of Cyperus malaccensis community was the highest, which was 441.51 mg/kg, the mean available silicon contents in soils in the growth areas of Phragmites australis+Cyperus malaccensis community(404.14 mg/kg) and Phragmites australis community(322.92 mg/kg) were decreased in turn. The available silicon storages in soils at 0-60 cm depth in the growth area of Cyperus malaccensis community was the highest,which was 238.37 g/m^2, the available silicon storage in soils in the growth areas of Phragmites australis +Cyperus malaccensis community(226.36 g/m^2) and Phragmites australis community(170.43 g/m^2) were decreased in turn.