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用苔藓氮含量和氮同位素值指示庐山大气氮沉降

罗 笠 肖化云

罗 笠, 肖化云. 用苔藓氮含量和氮同位素值指示庐山大气氮沉降[J]. 环境科学研究, 2011, 24(5): 512-515.
引用本文: 罗 笠, 肖化云. 用苔藓氮含量和氮同位素值指示庐山大气氮沉降[J]. 环境科学研究, 2011, 24(5): 512-515.
LUO Li, XIAO Hua-yun. Indication of Atmospheric Nitrogen Deposition in Mt. Lushan by Nitrogen Concentration and Nitrogen Isotope in Mosses[J]. Research of Environmental Sciences, 2011, 24(5): 512-515.
Citation: LUO Li, XIAO Hua-yun. Indication of Atmospheric Nitrogen Deposition in Mt. Lushan by Nitrogen Concentration and Nitrogen Isotope in Mosses[J]. Research of Environmental Sciences, 2011, 24(5): 512-515.

用苔藓氮含量和氮同位素值指示庐山大气氮沉降

基金项目: 国家自然科学基金项目(40573006)

Indication of Atmospheric Nitrogen Deposition in Mt. Lushan by Nitrogen Concentration and Nitrogen Isotope in Mosses

  • 摘要: 对庐山风景区不同海拔高度(263~1 400 m)上31个石生苔藓(Haplocladium microphyllum)氮含量〔w(TN),以干质量计〕和氮同位素值(δ15N)进行了分析. 苔藓w(TN)与海拔高度(Laltitude)的关系〔w(TN)=3.11-7.85×10-4Laltitude〕表明,在庐山风景区,随着海拔高度的升高,苔藓w(TN)呈逐渐下降趋势. 根据前人研究的苔藓w(TN)与大气氮沉降量的定量关系,估算出庐山山顶和山脚的大气氮沉降量分别为24.61和41.72 kg/(hm2·a). 苔藓δ15N在-4‰~-2‰范围出现的频率最高,表明庐山风景区大气氮沉降主要来源于农业或自然土壤中氮的释放.

     

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出版历程
  • 收稿日期:  2010-10-29
  • 修回日期:  2011-02-14
  • 刊出日期:  2011-05-25

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