The emission flux and mitigation options for N2O and CH4 under different rotation systems in central China

文献类型： 外文期刊

第一作者： Guo, LP

作者： Guo, LP;Lin, ED;Li, ZP

作者机构：

关键词： nitrous oxide emission flux;methane emission flux;rotation systems;mitigation options

期刊名称：GREENHOUSE GAS CONTROL TECHNOLOGIES

ISSN：

年卷期： 2001 年

页码：

收录情况： SCI

摘要： The seasonal variation of nitrous oxide and methane fluxes and the relative soil indexes such as soil inorganic nitrogen, and soil humidity were studied under typical dryland fields of winter wheatcotton(WC), winter wheat-summer soybean (WS), and winter wheat-summer maize (WM) rotation patterns in central China. And the fluctuation of N2O and CH4 emission fluxes after topdressing nitrogen fertilizer were investigated too. The results showed that--i) The soil N2O emission flux was positively correlated with soil inorganic N content mostly due to application especially under higher temperature and proper soil humidity condition; ii) The typical cropland was a weak net CH4 sink with the average flux of -0.003 similar to -0.025 mg CH4/m(2)/h; and the methane consumption intensity of dryland soils decreased with the increase of soil humidity; iii) Soil N2O emission peak happened within nine days since topdressing and irrigation occurred. Therefore, the mitigation options for N2O should be adopted mainly after N fertilizer is used especially under warmer temperature.

分类号：

  • 相关文献

[1]The emission-flux and mitigation options for N2O and CH4 from wheat fields under different rotation systems in Central China. Guo, LP,Lin, ED,Li, ZP,Wang, YQ. 2000

[2]A four-year record of methane emissions from irrigated rice fields in the Beijing region of China. Wang, ZY,Xu, YC,Li, Z,Guo, YX,Wassmann, R,Neue, HU,Lantin, RS,Buendia, LV,Ding, YP,Wang, ZZ. 2000

作者其他论文 更多>>

微信小程序