摘要
为了评价电厂温排水对海洋浮游生态系统的影响,2010年10月5日—11日于象山港宁海国华电厂附近海域,根据该海域表层海水温度的变化梯度设计围隔实验,测定围隔中各粒级海洋浮游生物生物量(B),呼吸率(R)和初级生产率(P)以及浮游生态系统的总初级生产量与总呼吸量的比值(TPP/TR)和周转率。分析结果表明,在25.20～26.40℃,0.25℃的温升对各粒级浮游生物的B,R和P的影响均不明显,0.52℃的温升对小型和微型浮游生物的R和P均有一定的促进作用,但对B的影响均不明显,对微微型浮游生物的B,R和P的影响不明显;在25.20～26.40℃,0.52℃的温升使该浮游生态系统的TPP/TR和周转率分别提高了1.2倍和1.5倍。本研究为评价温排水对海洋生态系统的影响提供了一定依据。
To evaluate effects of thermal effluent on the planktonic ecosystem,we carried out a mesocosm experiment according to the sea surface temperature gradient,near Guohua Ninghai Power Plant in Xiangshan Bay during October 5th to 11th of 2010,and determine biomass（B）,respiration rate（R）and primary productivity（P）of marine planktons and the ratio of total primary production and total respiration（TPP/TR）and turnover rate in the planktonic ecosystem.The results show that：in the range of 25.20-26.40 ℃,effects of 0.25 ℃ warming on the B,R and P of all plankton were not obvious,0.52 ℃ warming can elevate the R,P of microplankton and nano-phytoplankton.Effects of 0.52 ℃ warming on the B,R and P of picoplankton were not obvious.The TPP/TR and turnover rate in the planktonic ecosystem were increased 1.2 times and 1.5 times,respectively.A theoretical basis is provided for evaluating effects of thermal effluent on the marine planktonic ecosystem.
出处
《水产学报》
CAS
CSCD
北大核心
2011年第8期1240-1246,共7页
Journal of Fisheries of China
基金
科技部海洋公益性行业科研专项资金项目(200905010)
关键词
温升
围隔生态系统
各粒级浮游生物
呼吸率
temperature elevation
mesocosm ecosystem
different size-fractionated plankton
respiration rate
