东风港滨岸缓冲带对水生生物群落结构的影响

选择苏州河的支流东风港为研究对象,选取其中一段人工建造滨岸缓冲带作为研究区,调查其水生生物群落并与对照区相比较,以具体说明滨岸缓冲带对水生生物群落结构的影响。通过对研究区与对照区内的浮游植物、浮游动物、底栖动物和大型水生植物的调查研究,结果显示,研究区浮游植物的种类数多于对照区,且以清水种占优势;浮游动物群落结构研究区明显比对照区复杂;底栖动物的种类数、密度和生物量研究区都多于对照区;另外研究区还有较为多样化的大型水生植物群落。这些都表明研究区的水生生物群落结构较对照区更为完善。说明滨岸缓冲带对提高水体生物多样性,完善水生生物群落结构具有较为明显的作用。

The effect of riparian buffer zone on the aquatic community structure in Dongfenggang

Based on the comparison of the differences of aquatic community structure such as the species composition, density, biomass and diversity indexes of phytoplankton, zooplankton, and aquatic vascular vegetation between the riparian buffer zone and the non-riparian buffer zone of Dongfenggang, this paper assessed the effect of riparian buffer zone on the aquatic community structure. Results showed that the number of species of phytoplankton in riparian zone was more than that in the non-riparian zone, and most of them lived in clean water. The community structure of zooplankton in riparian zone was much more complex than that in the non-riparian zone; the number of species, density and biomass of zoobenthos in riparian zone was more than those in non-riparian zone. Furthermore, the riparian zone possess a more diversified community structure of aquatic vascular vegetation. All these results showed that the riparian buffer zone has a better aquatic community structure than the non- riparian buffer zone, which means the riparian buffer zone has a good effect on enhancing the diversity of aquatic organism and perfecting the community structure.