MeasurementsofatmosphericN2OconcentrationanditsemissionfluxesfromsoilinChina

被引：2

作者：

王少彬

宋文质

苏维瀚

曾江海

王智平

张玉铭

机构：

[1] Research Centre for Eco-Environmental Sciences

[2] Chinese Academy of Sciences

[3] Beijing

[4] China

[5] Institute of Agricultural Modernization

[6] Shijiazhuang

来源：

Science in China(Series B) | 1995年 / 38卷 / 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：

<正> Air samples in China were collected and determined for the concentration of N2O.The production rates of N2O from agricultural soils were measured with the chamber method.The results in-dicate that the background concentration of N2O averages（308±5）×10-9in 1989,which is close to that ob-tained at the other background stations abroad.However,at both urban and rural areas,atmospheric N2Oconcentrations are higher.N2O 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 N2O-N from agricultural sources（cultivated soil and N-fertilizers）amounts to 122Gg/a in China in 1990.

引用

页码：1101 / 1107

页数：7

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