Vertical variations of dissolved carbohydrates in the North Yap Trench  

作　　者：GUO Chaonan SUN Chengjun YANG Guipeng ZHANG Honghai CHEN Yan YIN Xiaofei JIANG Fenghua HUANG Yuhuan NIU Jiaohong DING Haibing 

机构地区：[1]Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education,Ocean University of China,Qingdao 266100,China [2]Key Laboratory of Marine Eco-environmental Science and Technology,Marine Bioresource and Environment Research Center,First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,China [3]College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China [4]Marine Ecology and Environmental Science Laboratory,Pilot National Laboratory for Marine Science and Technology,Qingdao 266237,China [5]Qingdao Collaborative Innovation Center of Marine Science and Technology,Qingdao 266100,China

出　　处：《Journal of Oceanology and Limnology》2020年第3期606-618,共13页海洋湖沼学报（英文）

基　　金：Supported by the National Basic Research Program of China(973 Program)(No.2015CB755904);the National Natural Science Foundation of China(No.41676067);the Fundamental Funds for Central Universities(No.201762030);the Key Research and Development Program of Shandong Province(No.2018GSF117044);the 111 Project(No.B13030)。

摘　　要：The concentrations of dissolved monosaccharides(MCHO),polysaccharides(PCHO),and total carbohydrates(TCHO)in the seawater samples collected from the north of the Yap Trench in the western Pacific Ocean were measured by 2,4,6-tripyridine-s-triazine(TPTZ)spectrophotometry method.The results show that the concentrations of MCHO,PCHO,and TCHO ranged from 4.6 to 22.1μmol C/L,3.5 to 27.3μmol C/L,and 13.8 to 36.3μmol C/L,respectively.In different sampling stations,the concentrations of MCHO,PCHO,and TCHO with water depth showed complex variation patterns.In the study area,the maximum concentrations of MCHO,PCHO,and TCHO occurred in the euphotic layer and the minimum concentrations occurred in mesopelagic seawater layer.Generally,the concentrations of MCHO,PCHO,and TCHO decreased with water depth from the euphotic layer to the hadal zone.The average value of PCHO/TCHO was higher than the average value of MCHO/TCHO,indicating that PCHO was the main component of TCHO in north of the Yap Trench.

关 键 词：Yap TRENCH ABYSS hadal ZONE MONOSACCHARIDE POLYSACCHARIDE 

分 类 号：X834[环境科学与工程—环境工程]