Contribution of Atmospheric Nitrogen Compounds to N Deposition in a Broadleaf Forest of Southern China

被引：0

作者：

HU ZhengYi XU ChengKai ZHOU LiNa SUN BenHua HE YuanQiu ZHOU Jing and CAO ZhiHong State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing China College of Forest Resources and Environment Nanjing Forestry University Nanjing China College of Resources and Environment Northwest SciTech University of Agriculture and Forestry Yangling China ^{[210008
,210007
,712100
]}

机构：

来源：

Pedosphere | 2007年 / 03期

关键词：

atmospheric deposition; broadleaf forest; nitrogen; red soil; soil acidification;

D O I：

暂无

中图分类号：

S718.5 [森林生态学];

学科分类号：

071012 ; 0713 ;

摘要：

<正>A one-year study in a typical red soil region of southern China was conducted to determine atmospheric nitrogen (N) fluxes of typical N compounds (NH3, NH4-N, NO3-N, and NO2) and contribution of three sources (gas, rainwater, and particles) to N deposition. From July 2003 to June 2004, the total atmospheric N deposition was 70.7 kg N ha-1, with dry deposition accounting for 75% of the total deposition. Dry NH3 deposition accounted for 73% of the dry deposition and 55% of the total deposition. Moreover, NO2 contributed 11% of the dry deposition and 8% of the total deposition. Reduced N compounds (NH4+ and NH3) were the predominate contributors, accounting for 66% of the total deposition. Therefore, atmospheric N deposition should be considered when soil acidification and critical loads of atmospheric deposition on soils are estimated.

引用

页码：360 / 365

页数：6