In the single year of 1986 the American state of Florida spent nearly NT $ 1 billion to cultivate forests on the coast at a cost of US $ 250,000 per hectare. It was foreseen that future generations of the trees would continually grow out toward the sea, having the function of creating new land.
一九八六年一年中，美國佛羅里達州就花十億新台幣復育紅樹林，也就是看上紅樹林子代會一直往外海生長，有淤泥造土的功能。