CAJ | 학술논문

在实测数据的基础上,分析大气活性氮对野生植物葎草(Humulus scandens)中微量元素含量的影响.采集华北平原北京周边6个地点的葎草,利用等离子体原子发射光谱技术(ICP-AES)分析植物叶中Ca,Mg,S,Fe,Mn,Cu,zn,B和Na的含量.结果表明,葎草叶中各元素的平均含量由高剑低依次为Ca(41 106)>S(8 370)>Mg(6 628)>Fe(476)>Na(92)>B(78)>Mn(49)>Zn(38)>Cu(15)mg·kg~(-1)干重;不同大气活性氮浓度下葎草叶中微量元素含虽没有显著差异:说明大气活性氮施肥效应造成的葎草对这些元素需求量的增加,并未超过当地土壤营养元素的供应能力.该实验结果将为研究全球大气氮沉降增加背景下,陆生草本植物的中微量元素营养状况提供科学参考.
재실측수거적기출상,분석대기활성담대야생식물률초(Humulus scandens)중미량원소함량적영향.채집화북평원북경주변6개지점적률초,이용등리자체원자발사광보기술(ICP-AES)분석식물협중Ca,Mg,S,Fe,Mn,Cu,zn,B화Na적함량.결과표명,률초협중각원소적평균함량유고검저의차위Ca(41 106)>S(8 370)>Mg(6 628)>Fe(476)>Na(92)>B(78)>Mn(49)>Zn(38)>Cu(15)mg·kg~(-1)간중;불동대기활성담농도하률초협중미량원소함수몰유현저차이:설명대기활성담시비효응조성적률초대저사원소수구량적증가,병미초과당지토양영양원소적공응능력.해실험결과장위연구전구대기담침강증가배경하,륙생초본식물적중미량원소영양상황제공과학삼고.
Based on field measurements, the effects of atmospheric reactive nitrogen (ARN) on the middle/trace element concen-trations in the leaves of wild plant humulus scandens were analyzed. Leaves of H. scandens were collected from six sites around Beijing in the North China Plain, and the concentrations of Ca, Mg, S, Fe, Mn, Cu, Zn, B, and Na in the leaves were deter-mined with inductively coupled plasma atomic emission spectrometry (ICP-AES). The results showed that element concentra-tions in leaves ranked as Ca(41 106)>S(8 370)>Mg(6 628)>Fe(476)>Na(92)>B(78)>Mn(49)>Zn(38)>Cu(15) mg·kg~(-1) dry matter; There were no significant difference in any of the individual element in the H. scandens leaves along the gradi-ent of ARN, suggesting that the increasing demand of H. scandens for middle/trace elements, induced by the enhanced nitrogen availability from ARN, was not yet beyond the nutrient-supply limits of the local soils. This study offers reference to scientific assessments of the middle/trace element status in terrestrial herbaccous plants under the global background of increasing nitrogen deposition.