深圳河口潮间带泥滩多毛类的数量变化及环境影响

1996年1月至1998年12月在深圳河口潮间带泥滩获得多毛类25种，隶属15科23属，多毛类优势种为羽须鳃沙蚕（Dendronereis pinnaticirrus）、腺带刺沙蚕（Neanthes glandicincta）、尖刺缨虫（Potamilla acuminata）、独毛虫（Thar yx sp.）寡鳃齿吻沙蚕（Nephtys oligobranchia）和大小头（Capitella capitata），A断面多毛类生物量的季节变化为每年4月（春季）最高，10月（秋季）最低，RB断面的多毛类从1996年7月起，以及ET断面的多毛类从1997年7月至1998年4月，均处于密度和低生物量状态，根据不同时间内多毛类优势种、密度和生物量的比较，判断了多毛类栖息环境受扰动状况，A和ET断面1997年10月至1998年10月、RB断面1996年7月至1998年10月均受到污染扰动。

Analysis of Environmental Effect and Polychaete Quantitative Variations on Intertidal Mudflat in Shenzhen Estuary

Twenty five species of polychaete belonging to 15 Families and 23 Genera were obtained from January 1996 to December 1998. The dominant species were Dendronereis pinnaticirrus, Neanthes glandicincta, Potamilla acuminata, Tharyx sp., Nephtys oligobranchia and Capitella capitata . The polychaete biomass at transect A were all the highest in spring (April) and the lowest in autumn (October) every year. The polychaete densities and biomass at transect RB were low from July 1996 to October 1998 and the polychaete densities and biomass at transect ET were low from July 1997 to April 1998. Polychaete living environment were assessed according to polychaete dominant species, densities, biomass in different sampling transects and seasons. The results showed that the polychaete at three transects were disturbed from July 1997 to July 1998.