Abstract：Field investigation was conducted in the Bohai Sea and the Yellow Sea between 6th to 23rd, November, 2013. Sea water samples were collected from 42 survey stations and two vertical stations A7 and E7, and the environmental parameters of the samples were analyzed. Horizontal and vertical variations of activities of nine extracellular enzymes in the study area were studied. The results showed that: The mean activities of nine extracellular enzymes in the surface seawater of the Yellow Sea and the Bohai Sea in late autumn ranked from high to low as the following order: Alkaline Phosphatase [77.31nmol/(L·h)]> Lipase [23.59nmol/(L·h)]> β-D-Glucosidase [3.87nmol/(L·h)]> Xylosidase [2.63nmol/(L·h)]> α-D- Glucosidase [1.58nmol/(L·h)] ≈Cellulase [1.47nmol/(L·h)] ≈ Chitinase [1.29nmol/(L·h)]> Leucine aminopeptidase [1.09nmol/(L·h)]> β-D-Galactosidase [0.74nmol/(L·h)];Generally, activities of the extracellular enzymes in the surface seawater of the Yellow Sea were higher than those in the Bohai Sea; indicating a high to low pattern of the activities from south to north in the research area; The activities of β-D-Glucosidase or Cellulose in surface seawater showed weak positive correlation with temperatures (P0.05);Vertical variations of the activities of the extracellular enzyme showed that the activities of most extracellular enzymes at surface, 10m and 30m water were higher than those at 50m, 75m and the bottom water.
赵丽军, 田继远, 于娟, 杨桂朋, 贾鸿冰. 2013年秋末黄渤海海水中胞外酶活性水平和垂直变化[J]. 中国环境科学, 2015, 35(7): 2171-2181.
ZHAO Li-Jun, TIAN Ji-Yuan, YU Juan, YANG Gui-Peng, JIA Hong-Bing. Horizontal and vertical variations of activities of extracellular enzymes in the seawater of the Yellow Sea and the Bohai Sea in late autumn, 2013. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(7): 2171-2181.
