Seasonal Changes of Albedo and Micrometeorological Conditions of Vegetation in a Semi-Arid Area in Inner Mongolia, China

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

Field observations were carried out in grasslands in a semi-arid area in China in order to analyze the mechanism of desertification, and the micrometeorological characteristics were examined in relation to desertification. Additional measurements were carried out over a dune and a vegetated area for comparison. Albedo values over the grassland which changed with grass growth, were significantly different from those at the humid vegetation site. The values were higher when the amount of grass was small, and changed with the surface conditions of dry soil and vegetation. Wind profile over the grass showed a logarithmic curve during the measurement periods, while that over the dune in the daytime was similar to a turbulent mixing layer, which prevented plant growth. Evapotranspiration of the grassland ET was 2.8 mm/day in early August, while it was less than 1 mm/day in the dry season. The heat budget of the grassland undergoing desertification was close to that of the dune.

作成者 Yoshinobu HARAZONO Schenggong LI Jianyou SHEN
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 79
終了ページ 89
言語 eng