CAJ | 학술논문

1998年7月3—8日胶州湾女姑山增养殖海域发生一次中肋骨条藻(Skeletonema costatum)赤潮，对该次赤潮生消全过程环境因子变化的监测分析表明：该养殖海域表层水体溶解态无机氮、无机磷、可溶性铁和锰含量高，为赤潮的发生提供了必需的营养基础；6月30日—7月1日较强的降雨过程使水体在以后两天中形成了高温、低盐、富营养的环境，有利于中肋骨条藻的快速增殖并直接导致了赤潮的爆发；7月3—8日天气持续的高温和静风使赤潮得以维持，随后磷、硅的耗尽使赤潮逐步走向消亡。应用相关分析和主成分分析，研究了赤潮与环境因子的关系。结果表明，影响本次赤潮的重要环境因子有：盐度、水温、硅酸盐、磷酸盐。
1998년7월3—8일효주만녀고산증양식해역발생일차중륵골조조(Skeletonema costatum)적조，대해차적조생소전과정배경인자변화적감측분석표명：해양식해역표층수체용해태무궤담、무궤린、가용성철화맹함량고，위적조적발생제공료필수적영양기출；6월30일—7월1일교강적강우과정사수체재이후량천중형성료고온、저염、부영양적배경，유리우중륵골조조적쾌속증식병직접도치료적조적폭발；7월3—8일천기지속적고온화정풍사적조득이유지，수후린、규적모진사적조축보주향소망。응용상관분석화주성분분석，연구료적조여배경인자적관계。결과표명，영향본차적조적중요배경인자유：염도、수온、규산염、린산염。
A Skeletonema costatum red tide occurred on July 3—8, 1998 in Jiaozhou Bay. Variations of ecological factors and their influence upon red tide organisms were determined. Relatively high contents of nutrients, iron and manganese were responsible for the growth of Skeletonema costatum. The outbreak of the Skeletonema costatum red tide has a close relationship with the strong rain on June 30 and July 1, 1998. After the rain, warm, low-salinity and eutrophic water resulted in the rapid proliferation of Skeletonema costatum. In terms of the nutrients structure, compared with TIN (total inorganic nitrogen), the concentration of silicate and phosphate were relatively deficient. At the developing stage, the concentration of various nutrients and iron in surface water as well as TIN were declining due to the declination of nitrate. Among the three forms of TIN, it is possible that Skeletonema costatum preferred to absorb nitrate. At the blooming stage, the exhaustion of phosphate and silicate led to the death of Skeletonema costatum and disappearance of red tide. After the bloom disappeared, the contents of TIN and silicate returned rapidly to normal, but the concentration of phosphate still remained low-level and renormalized after a considerable time. Two statistical methods (correlation analysis and principal component analysis) were used to determine the mechanism of red tide. Combined results show that temperature, salinity, silicate and phosphate were the critical ecological factors affecting the occurrence of the Skeletonema costatum red tide.