对闽东南深沪湾老红砂风沙沉积进行粒度测试,提取对环境变化敏感的粒级组分,结合年代学数据,初步划分了研究区晚更新世中晚期以来的气候变化阶段和气候驱动因素。研究发现,研究区经历了较冷干-暖湿-冷干-暖湿4个气候变化过程。气候变化主要受控于太阳辐射,表现出明显的23 ka长岁差周期、14.2 ka、11.8 ka半岁差周期,叠加约0.25 ka的双世纪周期,陆地-海洋-大气系统的内部因素对表现出来的百年周期可能产生放大或缩小影响。70.8—46.4 ka BP和21.3—11.6 ka BP两个阶段老红砂沉积速率较大,是老红砂风沙堆积的两个主要时期,两个阶段沉积速率分别达到30 mm/(100 a)、650 mm/(100 a)。 Particle size of sandstone sediments from Shenzhai Bay in southeastern Fujian Province were measured and grain-size components sensitive to environmental changes were extracted. Based on the chronological data, the climatic change stages and climatic driving forces since late-late Pleistocene in the study area . The study found that the study area experienced four periods of cold dry-warm-wet-dry-warm-wet climate. Climate change is mainly controlled by solar radiation and shows an obvious 23-year-old precession period, 14.2 ka and 11.8 ka prersensual cycles superimposed by a bi-century period of about 0.25 ka. The internal factors of the terrestrial-ocean-atmosphere system show a Centennial cycles may have magnification or reduction effects. The sedimentary rates of the older red sandstone from 70.8 to 46.4 ka BP and from 21.3 to 11.6 ka BP are two main periods of the sand accumulation of the sand, and the sedimentation rates reach 30 mm / (100 a) and 650 mm / (100 a).