This mode goes from low to high with the heighten of filling up and enlargement of sandbank (or tidal flat). 3.
这种自然演替模式随着滩涂（或沙洲）淤积增高和面积的扩涨，即按高程从低到高的顺序进行。
It is forbidden to reclaim cultivated land by destroying forests or grasslands, to reclaim land from lakes and to encroach on tidal-flat areas of rivers.
禁止毁坏森林、草原开垦耕地，禁止围湖造田和侵占江河滩地。
It is forbidden to reclaim cultivated land by destroying forests or grasslands, to reclaim land from lakes and to encroach on tidal-flat areas of rivers.
禁止毁坏森林、草原开垦耕地，禁止围湖造田和侵占江河滩地。
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