Distributions of Biochemical Elements and Their Influencing Factors in the Offshore Area of the Antarctic Peninsula
FU Dan
ZHENG Xiao-ling
WANG Bao-dong
XIN Ming
TENG Fang
XIE Lin-ping
Abstract：Based on the data obtained in the offshore area (60°~63°S) of the Antarctic Peninsula during the 30th Chinese Antarctic Research Expedition,the distribution characteristics of dissolved organic carbon (DOC),total nitrogen (TN) and total phosphorus (TP) in the study area are analyzed and the control factors such as topography and water mass are discussed.The results show that in the summer of 2014,the concentration of DOC in the water mass of the study area varied from 40.47 to 78.08 μmol/L,with an average of 66.33 μmol/L;the concentration of TN varied from 4.24 to 29.54 μmol/L,with an average of 14.88 μmol/L;and the concentration of TP ranged from 0.80 to 2.85 μmol/L,with an average of 2.00 μmol/L.The concentration of DOC in the surface layer was higher along Section D1 in the northwest and Section D5 in the southeast and lower in the middle of the study sea.The concentrations of TN and TP in the surface layer were higher to the north and south of Section D1 and lower in the middle and eastern parts of the study area.The vertical distributions of DOC,TN and TP concentrations are considered to be closely related to the seabed topography and the water masses.The impediment of seabed topography to the water masses may cause the biochemical elements to redistribute vertically.The spatial distributions of DOC,TN and TP reflect the complex biochemical cycles in the offshore area of the Antarctic Peninsula.This study will provide scientific basis for the resources development and utilization and the environmental impact assessment in the Antarctic pole.
Keywords：Antarctic Peninsuladissolved organic carbontotal nitrogentotal phosphorusdistribution characteristics
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 43-51 )