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位于长江入海口的崇明三岛由于长江携带的泥沙而自然长大,长江北支逐渐淤塞扩展,人们乐于促淤围垦造地。崇明岛1949年面积不足600km2,经过60多年的围垦,其面积已达1267km2,长兴岛电场圩、毛竹圩促淤圈围工程的相继实施,使陆域土地面积增长至88km2。横沙岛现有土地面积56km2,待整个横沙东滩促淤造地工程(1～6期)实施完毕,面积将超过长兴岛。崇明三岛开发利用了大量滩涂,但滩涂湿地面积却并未显著减少。用崇明三岛近些年围垦造地的数据、滩涂来说明滩涂促淤与适度造地的重要性。
Chongming Island, located at the mouth of the Yangtze River, grew up naturally due to the sediment carried by the Yangtze River. The northern branch of the Yangtze River was gradually blocked and expanded, and people were willing to promote siltation reclaiming land. After 1949, Chongming Island has an area of less than 600km2. After 60 years of reclamation, its area has reached 1267km2. The implementation of the Changxing Island electric field fair and the Moso-bamboo fairing area for siltation and encirclement projects have resulted in an increase of land area to 88km2. Hengsha Island has an existing land area of 56km2. When the entire Hengsha East Beach Flooding and Sedimentation Project (stages 1-6) is completed, the area will exceed Changxing Island. Chongming Island developed and utilized a large number of beach, but the wetland area has not significantly reduced. The data of reclamation and reclamation in Mishima of Chongming Island in recent years are used to illustrate the importance of promoting muddy sediment and making appropriate land.