黑纤维虾形草形态特征及其海草床生长情况调查

Investigation on Morphology Characteristics and Seagrass Bed Growth of Phyllospadix japonicus

本文对大连市某海域黑纤维虾形草的形态特征、种群密度和生物量等进行了初步调查。结果表明:黑纤维虾形草具有匍匐的根状茎特征,6—8月生物量、茎枝密度、株冠高度及最大叶片长度均随季节变化呈现上升趋势;8月各指标均达到最大值,生物量为2011.4 g/m^(2),茎枝密度为1.45×10^(4)株/m^(2),株冠高度为85.9 cm,最大叶片长度为16.8 cm^(2)9—11月各指标呈现下降趋势,11月该调查海域海草死亡。

In this paper,the morphological characteristics,population density and biomass of Phyllospadix japonicus in a sea area of Dalian City were investigated.The results showed that the biomass,stem and branch density,canopy height and maximum leaf length increased with the seasons from June to August.All indexes reached the maximum value in August,such as the biomass was 2011.4 g/m^(2),stem and branch density was 1.45×10^(4)plants/m^(2),canopy height was 85.9 cm,and the maximum leaf length was 16.8 cm.From September to November,all indexes showed a downward trend.In the sea area under investigation,seagrass died in November.