【摘要】：南大洋因具有較強的CO_2吸收能力,其海洋酸化問題較全球其他海域尤為突出。文石飽和度(Ω_(文石))作為衡量海洋酸化狀況的指標之一,在評估海洋鈣質(zhì)生物的生存環(huán)境中發(fā)揮著重要的作用。然而,由于南大洋復(fù)雜的氣候環(huán)境,在這一區(qū)域開展海洋酸化和Ω_(文石)的研究異常困難。因此,為了便于今后在南極周邊海域開展海洋酸化的研究,了解南大洋海洋酸化的現(xiàn)狀,對南極周邊海域Ω_(文石)的研究進行了概述。南大洋表層海水Ω_(文石)具有明顯的時空分布特征,主要體現(xiàn)為近岸海域Ω_(文石)值一般低于開闊大洋海域,且具有夏季高、冬季低的季節(jié)變化特征。在垂向分布上,海水Ω_(文石)值呈現(xiàn)由表層向深層遞減的趨勢。此外,由于受到深層水團的通風(fēng)和涌升的影響,南大洋Ω_(文石)等值線深度隨緯度升高而變淺。海水Ω_(文石)受海冰融化、�！獨釩O_2交換、浮游植物活動以及水文等諸多因素的共同控制。最后,對南大洋未來海洋酸化的變化趨勢進行展望,提出亟需解決的科學(xué)問題。
[Abstract]:Because of its strong CO_2 absorption capacity, the ocean acidizing problem of the Southern Ocean is more prominent than that of other seas in the world. As one of the indexes to measure the status of ocean acidizing, aragonite saturation plays an important role in evaluating the living environment of marine calcareous organisms. However, due to the complex climate and environment of the Southern Ocean, it is very difficult to carry out the study of ocean acidizing and 惟 _ (aragonite) in this area. Therefore, in order to facilitate the study of ocean acidizing in the waters around Antarctica in the future and to understand the present situation of ocean acidizing in the Southern Ocean, the study of omphacite in the waters around Antarctica is summarized. The surface sea water of the Southern Ocean has obvious temporal and spatial distribution characteristics, which is mainly reflected in the fact that the omarite value in the inshore sea area is generally lower than that in the open ocean area, and has the characteristics of high summer and low seasonal variation in winter. In the vertical distribution, the omarite value of seawater decreases from the surface to the deep layer. In addition, due to the influence of ventilation and surge of deep water masses, the depth of omphite isoline in the Southern Ocean becomes shallow with the increase of latitude. Sea water 惟 _ (aragonite) is controlled by many factors, such as melting sea ice, sea-air CO _ 2 exchange, phytoplankton activity, hydrological and so on. Finally, the future trend of ocean acidizing in the Southern Ocean is prospected, and the scientific problems that need to be solved urgently are put forward.
【作者單位】： 國家海洋局海洋—大氣化學(xué)與全球變化重點實驗室;國家海洋局第三海洋研究所;廈門大學(xué)海洋與地球?qū)W院;
【基金】：南北極環(huán)境綜合考察與評估專項項目專題4“南極周邊海域海洋化學(xué)與碳通量考察”(編號:CHINARE2012-2016:01-04-02;02 -01,03-04-02) 國家自然科學(xué)基金重點項目“南大洋N2O源匯格局:驅(qū)動機制及其對海洋N2O收支的影響”(編號:41230529)資助~~
【分類號】：P734;P736.3

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