【摘要】 应用黑白瓶法研究了盐度、光照度和温度对漂浮刚毛藻C ladophora expansal光合作用的影响。结果表明:漂浮刚毛藻对盐度有较强的适应性,盐度降到10以下或升到40以上时,光合作用受到抑制;在整个试验盐度范围内(0.38~60),该藻的呼吸作用几乎不受盐度的影响(P>0.05)。当水温为21℃时,光饱和点为19.2 klx,光补偿点为541 lx;当水温为34.5℃时,漂浮刚毛藻产氧速率最大;当水温为39.2℃左右时,该藻的耗氧速率等于净产氧速率;随着水温的升高,该藻的呼吸作用不断加强。更多还原

【Abstract】 The effects of salinity,light intensity and water temperature on photosynthesis in alga Cladophera expansal were studied by light and dark bottle technique in this experiment.The results showed that the photosynthesis was inhibited at a salinity of below 10 or above 40,while the respiration fluctuated slightly at the whole salinity regimes(0.38-60).The light saturation point and compensation point were 19.2 klx and 541 lx at 21 ℃,respectively.The net oxygen production rate was equivalent to the oxygen consumption rate at 39.2 ℃,but the oxygen production rate was higher at 34.5 ℃.The respiration was enhanced with increase in temperature.更多还原