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| Distribution of Chlorophyll-a Concentration in Sea Waters of Liaodong Bay in Summer and Winter |
| WANG Kun,WU Jing,DU Jing,WANG Nianbin |
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Abstract To investigate the distribution of chlorophyll‐a in sea water of Liaodong Bay ,38 samples were collected in surface ,interface ,and bottom water in two seasons ,August (summer) and December (win‐ter) of 2013 .The concentrations of chlorophyll‐a were monitored and analyzed ,and correlation analysis was used to show the linkages between different parameters ,to determine the possible influential factors of the variation in chlorophyll‐a concentration .The results showed that the average concentration of chloro‐phyll‐a in this area was 6 .90 μg/L in summer ,and 1 .26 μg/L in winter ,indicating that there was signifi‐cantly higher average concentration of chlorophyll‐a the in summer than that in winter .Analysis revealed that the level of chlorophyll‐a in the mouth of Liaodong bay was higher than that in the inner bay in sum‐mer horizontally .However ,it has an opposite tendency in winter .Vertically ,the maximal level of chloro‐phyll‐a was observed in the surface layer of Liaodong Bay ,followed by interface layer and the minimal at the bottom .In winter ,the tendency made a great difference ,the order of the chlorophyll‐a concentration was descrbed as the interface layer ,the bottom water and the surface water ,showing obvious spatial and temporal distribution of chlorophyll‐a .Concerned about the investigation of environmental factors such as temperature ,salinity ,dissolved oxygen and nutrients during the same period ,it is concluded that this find‐ing is primarily attributed to the seasonal variation in environmental factors in this area .
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Received: 25 June 2016
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