水东湾困难立地滩涂红树林生长表现分析

Growth Performance of Mangrove on Difficult Site in Shuidong Bay in Intertidal Zones

红树林生态系统具有重要的生态价值,其人工恢复是构建沿海生态安全的重要内容之一。文章对广东水东湾人工红树林的生长表现进行了调查总结,并在此基础上阐述了在困难立地条件下可行的造林方法:无瓣海桑(Sonneratia apetala)和拉关木(Laguncularia racemosa)适宜种植在海水盐度相对较低、海水浸泡时间相对较短的中、高潮带;在该研究区域无瓣海桑在困难立地条件下生长表现优于其他种;耐盐速生种可以作为先锋树种改善立地条件,利于后期乡土树种的种植。

The mangrove ecosystem has important ecological value ;its artificial restoration is an important part of constructing coastal ecological security .Growth performance of mangroves in the Shuidong Bay of Guangdong were investigated ＆ summarized .Feasible afforestation methods on difficult site were elaborated ;Sonneratia apetala ＆Laguncularia racemosa are suitable to be planted in the middle and high parts of intertidal zones with lower salinity＆ shorter time of seawater immersion ;growth performance of Sonneratia apetala grow optimal than that of other kinds in difficult site in this study area ;tolerant species can be served as a fast-growing pioneer species to improve site conditions ,which conducive to cultivation of native species in later period .