极地研究Issue(4)：412-420,9.DOI:10.13679/j.jdyj.2015.4.412
南极普里兹湾表层沉积物中磷的形态分布特征
SPECIATION OF PHOSPHORUS IN SURFACE SEDIMENTS OF THE PRYDZ BAY, ANTARCTICA
摘要
Abstract
Speciation of phosphorus ( P) in surface sediments collected during several Chinese National Antarctic Re-search Expedition cruises in Prydz Bay was investigated .The sequential extraction method was used to separate and quantify the following five sedimentary P reservoirs:exchangeable phosphorus ( ExP) , iron phosphorus ( FeP) , au-thigenic phosphorus ( AuP) , detritus phosphorus ( DeP) , and organic phosphorus ( OP) .DeP and AuP were the major types of phosphorus in surface sediments , with an average of 37.5% and 25.8%, respectively, of total P. Obvious positive relationships between both OP and AuP , and organic carbon and biological silica indicated that they might originate from the same source , that is , marine biogenic matter .DeP was positively correlated with alu-minum and sandy sediments , which suggests that this form of P was derived from land-based sources and carried to the sea ice in ocean currents .The content and distribution of P in sediments were mainly influenced by the sources of P, but the grain size of sediments and other physical factors , such as sea ice and current , were also involved . ExP was related to the grain size of sediments , while FeP was related to iron.In addition, both ExP and FeP were small components of total P , accounting for only 8.9%and 6.5%, respectively.Bioavailable P was concentrated in central and eastern Prydz Bay , with an average content of 37.2%of total P.关键词
磷/沉积物/生物地球化学/普里兹湾/南极Key words
phosphorus/sediment/biogeochemistry/Prydz Bay/Antarctica引用本文复制引用
何乐龙,于培松,张海峰,韩正兵,蔡小霞,潘建明,张海生..南极普里兹湾表层沉积物中磷的形态分布特征[J].极地研究,2015,(4):412-420,9.基金项目
国家自然科学基金（41006118，41376193）、中央级公益性科研院所基本科研业务费专项资金（JG1404）、极地标本资源共享平台（2005DKA21406）和国家海洋局“南北极环境综合考察与评估”专项（CHINARE2015-04-01，CHINARE2015-04-04， CHINARE2015-01-04）资助 （）
