广东湛江白骨壤红树人工林消波效应初步研究

A preliminary study on wave attenuation effect of artificial mangrove Avicennia marina in Zhanjiang,Guangdong Province

以广东湛江红树林国家级自然保护区内白骨壤人工林（Avieenniamarina）为研究对象，通过对白骨壤人工林林内距离林缘25m、50m、75m、100m处的消波观测，分析红树林消波效应。研究表明：白骨壤人工林消波效果显著。波浪从林缘经过白骨壤01样地（0-25m）、02样地（25～50m）、03样地（50～75m）、04样地（75-100m）后的1／10波高减低率分别为31．49％、35．23％、40．85％、38．88％。可以看出消波率受林分结构指标林分生物量体积密度的影响；波高减低率随水深的增加而增加；而白骨壤人工林消波率随着波高的增加未呈现出规律变化。总体看来，白骨壤消减程度是随着林分生物量体积密度的增加而增加的，当植株较矮时，受枝叶层影响消波效果会更明显；波浪传播距离越长，1／10波周期越大。

Wave attenuation effect of Avicennia marina was studied＇at Zhanjiang Mangrove National Nature Reserve in Guangdong Province. To research wave attenuation of mangrove, it has observed the distance of 25 m, 50 m, 75 m, 100 m through edge of forest. The results showed that Avicennia marina has better wave attenuation in practical observation, which has effect on density of mangrove forests of structure of forest stands. Passing through mangroves from plot 01 （0-25 m）, plot 02 （25-50 m） to plot 03 （50-75 m）, plot 04 （75-100 m）, 1/10 wave height of Avicennia marina has reduced by 31.49%, 35.23%, 40.85%, 38.88%. Avicennia marina on wave attenuation has increased with increasing of water depth. As well as differentiational rate of wave attenuation with rise of wave height. To the sum, the extent of wave attenuation effect of mangrove depend on stand of volume density from the ground to the branches and leaves, stand of volume density increases with wave attenuation. 1/10 wave period increases with increasing the distance of wave propagation.