黄河中下游流域典型湿地沉积物中不同形态磷的分布特征  

Distribution characteristics of different phosphorus forms in sediments of typical wetlands in the middle and lower reaches of the Yellow River

作　　者：张家洋[1] 蔺芳[1] 赵琬璐 陈恩希 毛鑫羽 ZHANG Jia-yang;LIN Fang;ZHAO Wan-lu;CHEN En-xi;MAO Xin-yu(School of Life Sciencec and Basic Medicine,Xinxiang University,Xinxiang 453003,Henan,China)

机构地区：[1]新乡学院生命科学与基础医学学院,河南新乡453003

出　　处：《湖北农业科学》2022年第20期40-44,共5页Hubei Agricultural Sciences

基　　金：河南省重点研发项目(212102310228);新乡市科技攻关计划项目(GG2020016)。

摘　　要：为探讨黄河中下游流域典型湿地沉积物中不同形态磷的分布特征,选择河南省新乡市陈桥湿地中11种具有代表性的样地(4种为核心区,7种为缓冲区)作为研究对象,对各样地不同土层不同形态磷的分布特征进行了分析。结果表明,11种样地沉积物中各形态无机磷含量表现为铁铝结合态磷>钙结合态磷>可还原态磷>弱吸附态磷;核心区沉积物中弱吸附态磷的平均含量为3.5 mg/kg、可还原态磷的平均含量为11.6 mg/kg、铁铝结合态磷的平均含量为276.9 mg/kg、钙结合态磷的平均含量为165.2 mg/kg,缓冲区沉积物中弱吸附态磷的平均含量为3.4 mg/kg、可还原态磷的平均含量为8.6 mg/kg、铁铝结合态磷的平均含量为255.7 mg/kg、钙结合态磷的平均含量为203.9 mg/kg;弱吸附态磷大部分集中在沉积物浅层,还原态磷和铁铝结合态磷大部分集中在沉积物深层,而钙结合态磷在沉积物浅层和深层均匀分布。In order to investigate the distribution characteristics of different phosphorus forms in typical wetland sediments of the middle and lower reaches of the Yellow River,11 typical plots(4 kinds of core zones and 7 kinds of buffer zones)in Chenqiao Wetland of Xinxiang City,Henan Province were selected as the research objects,and the distribution characteristics of different phosphorus forms in different soil layers were analyzed. The results showed that the contents of inorganic phosphorus in 11 plots were in the order of Fe-Al bonded phosphorus,calcium-bonded phosphorus,reducible phosphorus and weakly adsorbed phosphorus from high to low. The average contents of weakly adsorbed phosphorus,reducible phosphorus,Fe-Al bounded phosphorus and calciumbounded phosphorus were 3.5 mg/kg,11.6 mg/kg,276.9 mg/kg and 165.2 mg/kg in core zones,and were 3.4 mg/kg,8.6 mg/kg,255.7 mg/kg and 203.9 mg/kg in buffer zones,respectively. The weakly adsorbed phosphorus was mainly concentrated in the shallow layer of sediment,reducible phosphorus and Fe-Al bonded phosphorus were mainly concentrated in the deep layer of sediment,while calcium-bonded phosphorus was evenly distributed in the shallow and deep layers of sediments.

关 键 词：湿地 弱吸附态磷 可还原态磷 铁铝结合态磷 钙结合态磷 黄河中下游流域 

分 类 号：X522[环境科学与工程—环境工程]