Measurements of atmospheric N2O concentration and its emission fluxes from soil in China

被引：0
|
作者：
王少彬
宋文质
苏维瀚
曾江海
王智平
张玉铭
机构：
[1] Institute of Agricultural Modernization,Chinese Academy of Sciences,Shijiazhuang 050021,China
[2] Research Centre for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China
来源：
Science China Chemistry | 1995年 / 09期
关键词：
N2O; atmospheric concentration; soft; N-fertilizer; flux;
D O I：
暂无
中图分类号：
S153 [土壤化学、土壤物理化学];
学科分类号：
0903 ; 090301 ;
摘要：
Air samples in China were collected and determined for the concentration of NO.The production rates of NO from agricultural soils were measured with the chamber method.The results in-dicate that the background concentration of NO averages（308±5）×10in 1989,which is close to that ob-tained at the other background stations abroad.However,at both urban and rural areas,atmospheric NOconcentrations are higher.NO emission fluxes from several farmlands are different and dependent on the fac-tors of agricultural practice and climate.But their magnitudes are at the same order.Preliminary calculationshows that the released NO-N from agricultural sources（cultivated soil and N-fertilizers）amounts to 122Gg/a in China in 1990.
引用
收藏
页码：1101 / 1107
页数：7
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