Seasonal Micrometeorological Changes over a Grassland in Inner Mongolia

抄録

Field observations were carried out over grasslands facing desertification in a semi-arid area in China, then the micrometeorology was examined in relation to desertification. Albedo changed with grass growth, which reflects the surface conditions, wind profile over the grass was logarithmic though over the dune a turbulent mixing layer which prevents plant growth was dominant. Evapotranspiration of the grassland ET was 2.8mm/day in early August, while it was less than 1mm/day in the dry season. Heat budget of the grassland facing desertification was close to that of the dune.