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沧海桑田,一直都用以形容世间万物的极大变迁,这种变化往往需要数千,甚至数万年的漫长岁月。可是今日当你立足于黄河三角洲时,沧海桑田的变化、海陆分界的变迁,一览无余。黄河三角洲是以黄河入海河道为中心、向着大海辐射的巨大扇形。沿着黄河由东向西,就能很直观地感受她分明的层次——入海口、湿地、陆地。距离渤海越近,其堆积形成的时间就越晚,也意味着她的生命就越年轻!近年来,山东省沿海各市均发生海水入侵现象,导致了耕地红线的不断后移。相关研究人员在莱州湾对海
It has always been used to describe the great changes in all things in the world. Such changes often require thousands or even tens of thousands of years of long years. However, when you are based in the Yellow River Delta today, the vicissitudes of life and the changes in the sea-land boundaries have sweeping views. Yellow River Delta is the Yellow River into the sea as the center, towards the sea a huge fan-shaped radiation. Along the Yellow River from east to west, you can very intuitively feel her distinct level - into the sea, wetlands, land. The closer it is to the Bohai Sea, the later its accumulation will be formed, and the younger it will be for her life. In recent years, seawater inrush from all coastal cities in Shandong Province has led to continuous backwardness of the red line of cultivated land. Related researchers in Laizhou Bay on the sea