Han Guang-Xuan, Li Yun-Zhao, Yu Jun-Bao, Xu Jing-Wei, Wang Guang-Mei, Zhang Zhi-Dong, Mao Pei-Li, Liu Yu-Hong
Laboratory of Coastal Wetland Ecology/Shandong Province Key Laboratory of Coastal Zone Environment Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, Shandong, China.
Ying Yong Sheng Tai Xue Bao. 2011 Feb;22(2):467-72.
Based on the 23 sheets of remote sensing images from 1976 to 2009, in combining with the water and sediment data from Lijin station and the annual precipitation data of Yellow River Basin from 1976 to 2008, this paper quantitatively analyzed the features of water and sediment discharge from Yellow River, and the evolution process of Yellow River Delta and related driving mechanisms. In 1976-2008, the annual runoff and the annual sediment discharge into sea changed largely and frequently, but overall, presented a decreasing trend. Since the course of the Yellow River changed its direction to Qingshui channel in 1976, the Delta coastline and area were generally in a silting-up state. The evolution process of the Delta could be approximately divided into three stages, i.e., 1976-1985, 1986-1995, and 1996-2009, and the increasing rate of the Delta decreased with the stages. The coastline and area of the Delta were significantly exponentially correlated to the sediment accumulated at Lijin station, and the inter-annual variation of the precipitation of the Yellow River Basin had a strong correlation with that of the sediment at Lijin station, suggesting that the annual variation of the precipitation in Yellow River Basin was the main factor affecting the runoff and sediment discharge into sea.
基于1976年至2009年的23张遥感影像图，并结合利津站的水沙数据以及1976年至2008年黄河流域的年降水量数据，本文对黄河水沙排放特征、黄河三角洲演变过程及相关驱动机制进行了定量分析。1976年至2008年，黄河年径流量和年入海泥沙量变化幅度大且频繁，但总体呈下降趋势。自1976年黄河改道清水沟以来，三角洲海岸线和面积总体处于淤积状态。三角洲的演变过程大致可分为三个阶段，即1976 - 1985年、1986 - 1995年和1996 - 2009年，且随着阶段推进，三角洲的增长速率降低。三角洲的海岸线和面积与利津站的淤积泥沙量呈显著指数相关，黄河流域降水量的年际变化与利津站泥沙量的年际变化有很强的相关性，这表明黄河流域年降水量变化是影响入海径流和泥沙排放的主要因素。
