我国一些站点降雨和森林穿冠水中铵态氮的同位素丰度

被引：3

作者：

余龙飞

李炳文

张逸

王章玮

机构：

[1] 中国科学院生态环境研究中心

来源：

环境化学 | 2013年 / 32卷 / 09期

关键词：

降雨; 穿冠水; 铵态氮; δ15N.;

D O I：

暂无

中图分类号：

X832 [水质监测];

学科分类号：

090810 [水产品加工与质量安全];

摘要：

在我国7个站点采集了降雨和森林穿冠水样品,分析了铵态氮的同位素丰度.结果表明,各站点降雨中铵态氮δ15N的平均值为-8.67‰至-3.66‰,其中杭州近郊梅家坞降水样品中铵态氮δ15N平均值最低,贵州雷公山降雨样品中铵态氮δ15N平均值最高.城市穿冠水中铵态氮δ15N值要明显高于降雨,而郊区和背景地区穿冠水中铵态氮δ15N值略高于降雨,这可能是由于城市地区林冠层富集有更多的大气颗粒物并通过冲刷过程进入穿冠水所致,因为大气颗粒物中铵态氮通常富集15N.

引用

页码：1599 / 1603

页数：5

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