中文摘要：

2012年，黄土高原东部未发生明显沙尘事件，降尘主要表现为常态化的非尘暴降尘.对2012年该区18个站点降尘量监测结果表明，研究区年均降尘量为89.27t（km^2.a），春季、夏季、秋季和冬季分别占全年的53.69％、22.45％、8.44％和15.42％；降尘量季节变化主要受风速影响，但高的降水量和NDVI指数也可以减少降尘量；在现代气候背景下，研究区各季节非尘暴降尘均主要为地方性粉尘，春、冬季降尘中远源粉尘含量相对较高，总体来说，黄土高原东部已很少接收西北干旱区的远源粉尘；与地质时期风尘通量相比，黄土高原现代降尘量表明现代气候可能处于间冰期较为暖湿的时期，并且倒数第2次冰期和末次冰期的整体气候环境可能类似于黄土高原西部现代3、4月份的气候，而倒数第2次间冰期和末次间冰期则类似于黄土高原东部现代5、6月份的气候.

英文摘要：

Obvious dust events had not occurred in China＇s eastem Loess Plateau in 2012, so dustfall in this period main derived from non-duststorm. Extensive dustfall collections were carried out from January through December of 2012 in China＇s eastern Loess Plateau. The results show that the annual mean dustfall was about 89.27t/（km^2.a） for the study region. About 53.69%, 22.45%, 8.44%, and 15.42% for the dustfall was collected, respectively, in the spring （March to May）, summer （June to August）, autumn （September to November）, and winter （January, February, and December）. The variation in dustfall in a large spatial scale was controlled mostly by climate background, but in local area was influenced by local factors, such as geomorphology, hydrological condition, soil, and vegetation coverage; the seasonal variation in dustfall was influenced mostly by wind speed, but high precipitation and NDVI index have also reduced dustfaU. In modem climatic background, the dustfall in each season all mainly came from local region in the study area, but dustfall contained comparatively more dust came from far sources. The dustfall in the Loess Plateau also suggested that modem climate may is in a relatively warm-wet period of interglacial stage, and the climate in penultimate and last glacial stage may be similar with which in March and April of modem western Loess Plateau, but the climate in penultimate and last interglacial stage may similar to the climate in May and June of modem eastern Loess Plateau.