福建洛阳江口红树林湿地恢复对蟹类密度的影响

底栖动物尤其是蟹类对红树林湿地生态系统的生态功能恢复有重要意义,研究检验不同红树林种类及林龄和郁闭度是否对蟹类分布情况存在显著影响。从福建洛阳江口红树林湿地动态变化对蟹类密度的影响可以看出：不同植被类型对蟹类密度的影响达到极显著水平。光滩与成熟的秋茄（Kandelia candel）,桐花树（Aegiceras corniculatum）和白骨壤（Avicennia marina）之间有显著性差异（P〈0.05）,而桐花树、秋茄、白骨壤之间无显著性差异（P〉0.05）。在不同红树林树种和林龄2因素对蟹类密度的影响的双因素分析中：树种、林龄、树种和林龄间互作均对蟹类密度的影响达到极显著水平;在不同红树林树种和郁闭度2因素对蟹类密度的影响的双因素方差分析中：树种对蟹类密度的影响达到极显著水平,郁闭度对蟹类密度的影响达到显著水平;树种和郁闭度之间互作对蟹类密度的影响不显著。

The research on the effect of crabs density by mangrove wetland restoration in Luo yangjiang estuary, Fujian

Crabs play a very important role in mangrove wetland ecosystem restoration of ecological functions.The paper tested whether the density distribution of crabs that there was a significant impact under different mangrove species and ages.According to the effects of dynamic change of the local mangrove wetland on ecological environment,it was revealed that the different vegetation types had extremely significant impact on the crabs density.There were significant differences between beach and mature trees,Kandelia cande,Aegiceras corniculatum,Avicennia marina（P0.05）,whereas not so much difference were found among Kandelia cande,Aegiceras corniculatum,Avicennia marina（P0.05）.The result from two-factor variation analysis of the impact of different mangrove species and ages on crabs density showed that： the interaction of species,ages,species and ages had extremely significant impact on the density of crabs.The result of two-factor ANOVA of the impact of different mangrove species and canopy density on the fiddler crabs population density showed that,tree species and canopy density respectively had extremely significant impact on the density of crabs,however,the interaction between tree species and canopy density had no obvious impact on crabs density.