摘要
１９９３年８和１１月，１９９４年３，５和１０月，应用荧光法测定了厦门西海域水体中各载体相（浮游植物、细菌和游离态）碱性磷酸酶活力（ＡＰＡ），结果表明：ＡＰＡ呈较为明显的季节变动，总ＡＰＡ表现为夏季（１９９３年８月）最高，春（１９９４年５月）秋（１９９３年１１月）最低；结果亦显示，该海域浮游植物和海水是碱性磷酸酶的主要载体，平均分别占４４．７％和４０．５％；与环境因子的相关分析表明，各形态磷，硝态氮、溶解氧、化学耗氧量、初级生产力、细菌生长速率（ＢＰ）对ＡＰＡ有较明显的影响；其中除ＢＰ与ＩＡＰＡ成正相关外，其余均为负相关．还对碱性磷酸酶作为水体磷状况的指示和在磷的生物地球化学循环的作用进行了初步讨论．
Total alkaline phosphatase activity (APA), phytoplankton APA, bacteria APA and free APA were measured by fluorometry during five cruises (August and November 1993, March, May and October 1994) in western Xiamen waters. Results showed that APA fluctuated ObviouSly, total APA increased up tO the highest in August, 1993 [6. 1751 (dm3.h)] the decreased doWn to the lowest in November, 1993 [0. 5677 μg/(dm3·h)], the data also show that both phytoplankton and sea water are the major carriers Of alkaline phO6Phatase, contributing 44.7% and 40.5%, respectively. Repression analysis indicates that controlling mechanism of APA is complicated, phosphorus, nitrate, diedved oxygen, chemical oxygen demand, primary production and baterial production (BP) had significant effects on APA, in which BP is positive with APA while others negative with APA. The role of APA in phosphorus biogeochemical cycling and possible application of APA as indicator of phosphorus concenustion (such as limitation) are discussed.
出处
《海洋学报》
CAS
CSCD
北大核心
2000年第1期62-68,共7页
基金
国家自然科学基金!49206063
关键词
碱性磷酸酶
浮游植物
细菌
厦门西海域
影响因子
Alkaline phosphatase, phytoplankton, bacteria, phosphorus, controlling factors, Xiamen
