Chen Luzhen, Yang Zhiwei, Wang Wenqin, Lin Peng
School of Life Sciences, Xiamen University, Xianzen 361005, China.
Ying Yong Sheng Tai Xue Bao. 2006 Feb;17(2):177-81.
Plantable tidal flat is one of the most important factors affecting the survival rate of mangroves seedlings in forestation. In this paper, an experiment was conducted in the tidal zones of Umbrette Natural Reserve in the Dayu Island of Xiamen in May 2003 to investigate the critical tidal level for Kandelia candel forestation. The results showed that the tidal level of 0.99 m above the zero tidal level of the Huang Ocean was not suitable for planting K. candel seedlings, because the waterlogging time at this tidal level was longer than 8 h per-tide-cycle, and the survival rate was lower than 50% . At 1.62 m above the zero tidal level of Huang Ocean, K. candel seedlings had the best growth and the highest photosynthetic assimilation, with a survival rate of 90%. At 1.31 m above the zero tidal level of Huang Ocean, K. candel seedlings could still grow well. It could be concluded that the tidal level of 1.62 m was optimal for planting K. candel seedlings, and the critical tidal level of K. candel seedlings in the coastal areas of Xiamen was not lower than 1.31 m above the zero tidal level of Huang Ocean, where the waterlogging time was not longer than 5.6 h per-tide-cycle.
可种植潮滩是影响红树林造林中幼苗成活率的最重要因素之一。本文于2003年5月在厦门大屿岛伞护自然保护区的潮间带进行了一项实验，以研究秋茄造林的临界潮位。结果表明，高于黄零潮位0.99米的潮位不适合种植秋茄幼苗，因为在此潮位下每个潮汐周期的淹水时间超过8小时，成活率低于50%。高于黄零潮位1.62米时，秋茄幼苗生长最佳，光合同化率最高，成活率达90%。高于黄零潮位1.31米时，秋茄幼苗仍能良好生长。可以得出结论，1.62米的潮位最适合种植秋茄幼苗，厦门沿海地区秋茄幼苗的临界潮位不低于高于黄零潮位1.31米，在此潮位下每个潮汐周期的淹水时间不超过5.6小时。
