摘要
以辽河保护区七星湿地为研究对象,通过对湿地土壤NO_(3)^(-)-N和NH_(4)^(+)-N空间分布及湿地土壤含水量与pH指标分析,研究流域湿地土壤无机氮空间变化特征。研究结果表明,湿地土壤含水量影响NO_(3)^(-)-N和NH_(4)^(+)-N的空间分布,湿地土壤含水量高,土壤中NO_(3)^(-)-N的含量相对较高;湿地土壤含水量低,土壤中NH_(4)^(+)-N的含量相对较高。湿地土壤pH值也影响NO_(3)^(-)-N和NH_(4)^(+)-N含量的空间分布,在测定的湿地土壤中,pH在5.63~7.50情况下NH_(4)^(+)-N含量较高,pH在7.50~7.63情况下NO_(3)^(-)-N含量较高。该研究结果揭示了北方河流湿地无机氮空间分布特征,可为流域湿地管理提供参考。
Taking Qixing wetland of Liaohe River Reserve as the research object,the paper studied the spatial variation characteristics of inorganic nitrogen of soil in wetland by analyzing soil NO_(3)^(-)-N/NH_(4)^(+)-N and soil moisture content and pH index.The results showed that the soil water content affected the spatial distribution of NO_(3)^(-)-N/NH_(4)^(+)-N,and the soil NO_(3)^(-)-N content was relatively high due to the high soil water content.Wetland soil water content is low,the content of NH_(4)^(+)-N in soil is relatively high.The pH value of wetland soil also affected the spatial distribution of NO_(3)^(-)-N/NH_(4)^(+)-N content.Among the measured pH values of wetland soil,NH_(4)^(+)-N content was higher when pH was 5.63-7.50,and NO_(3)^(-)-N content was higher when pH was 7.50-7.63.The results reveal the spatial distribution characteristics of inorganic nitrogen in northern river wetlands,which can provide scientific reference for watershed wetland management.
出处
《环境保护与循环经济》
2022年第2期48-51,共4页
environmental protection and circular economy
基金
国家自然科学基金面上项目(41977074)
辽宁省科学技术计划项目(2021JH2/10300005)。
关键词
河流湿地
PH
含水量
无机氮
空间分布
river wetland
pH
water content
inorganic nitrogen
spatial distribution
