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Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (3): 372-376.

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Greenhouse gases emission or uptake in Inner Mongolia natural and free-grazing grasslands

WANG Yuesi1, XUE Min1, HUANG Yao1, LIU Guangren1, WANG Mingxing1, GI Baoming2   

  1. 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100083, China;
    2. Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2000-10-12 Revised:2002-07-26 Online:2003-03-15

Abstract: GC-MS was used to measure the greenhouse emission of Inner Mongolia Grassland. The results showed that four kinds of typical semi-arid grasslands in Inner Mongolia had their own special seasonal patterns as the source of atmospheric N2O and CO2 emission and the sink of atmopsheric CH4,which were controlled by seasonal weather variation. Different soil and vegetation types and precipitation influenced the intensity of emission and upatake of the gases. Compared with natural grassland,free grazing decreased CH4 uptake and N2Oemission,but increased CO2 emission.

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