摘要
１９９２年１２月～１９９３年３月、１９９３年１２月～１９９４年２月、１９９４年１２月／１９９５年３月连续３个夏季期间在南极长城湾进行了海洋生态系统调查，利用获得的浮游植物现存量（叶绿素ａ）资料进行分析研究发现：１９９２／１９９３年夏季叶绿素ａ含量最高，平均值为３．７９ｍｇ／ｍ３，变化幅度也最大，为１０．１０ｍｇ／ｍ３。连续３个夏季的年际变化趋势是３．７９ｍｇ／ｍ３（１９９２／１９９３）＞１．８０ｍｇ／ｍ３（１９９３／１９９４）＞１．２０ｍｇ／ｍ３（１９９４／１９９５）。而变化的幅度也同样依次为１０．１０ｍｇ／ｍ３＞６．５７ｍｇ／ｍ３＞２．４１ｍｇ／ｍ３。所获得的结果与南极地区相同季节其它近海海水中的叶绿素ａ含量进行比较得知：除Ｇｅｒｌａｃｈｅ海峡（１９５９年１月）１１．６０ｍｇ／ｍ３和ＭｃＭｕｒｄｏ海峡（１９６１年１２月）５６．１０ｍｇ／ｍ３外，这次调查结果属中上水平。本文还对该海域叶绿素ａ的垂直分布状况进行了分析。
During three successive austral summers from Dec. to March of 1992/1993,1993/1994 and 1994/1995,investigation was carried out on phytoplanktonic chlorophyll a content in Great Wall Bay,Antarctica.The results showed that among the three summers the concentration of chlorophyll a in the summer of 1992/1993 was the highest with an average value of 3.79 mg/m 3 ,the range of chlorophyll a variation in this year was the largest,too. The year to year variation of average value of chlorophyll a was 3.79 mg/m 3 (1992/1993)>1.80 mg/m 3 (1993/1994)>1.20 mg/m 3 (1994/1995).The variation range of chlorophyll a was 10.10 mg/m 3 (1992/1993)> 6.57 mg/m 3 (1993/1994)> 2.41 mg/m 3 (1994/1995). Compared with chlorophyll a concent in austral summer in other area of Antarctica,the chlorophyll a in Great Wall Bay in the three year was relatively high though it was lower than that of 11.60 mg/m 3 in Jan. 1959 in Gerlache Strait and 56.10 mg/m 3 in Dec. 1961 in McMurdo Sound. The vertical distribution of chlorophyll a in water column was also presented.
出处
《极地研究》
CAS
CSCD
1999年第2期113-121,共9页
Chinese Journal of Polar Research
