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外滩湿地淹水时间与高程密切相关。外滩湿地造林的主导因子是水 ,南方型黑杨在洞庭湖外滩湿地上的生长量随滩地年均淹水时间的增加而降低 ,淹水 87d的滩地如不采取工程措施 ,造林不能成功 ,淹水 110d的滩地造林林木不能成活。杨树抗水淹能力随林龄的增加而增强
Bund wetland flooding time and elevation are closely related. The dominant factor of afforestation in the wetlands of the Bund is water. The growth of the southern Poplar in the wetlands of the Dongting Lake on the wetland decreases with the increase of the average flooding time of the beaches. If the flooded beaches for 87 days do not take engineering measures, the afforestation will not be successful. Water 110d beach land afforestation trees can not survive. Poplar tree resistance to flooding increased with age