论文部分内容阅读
研究了黄海青岛海区漂浮绿潮藻浒苔(Ulva prolifera)的光合生理特性并进行状态等级评价,为今后黄海绿潮暴发趋势预警预测和生长潜力评估奠定基础。首先根据藻体状态对应其最大光量子产量(Fv/Fm)的差异,初步将藻体分为4个等级:Ⅰ级健康藻体,藻体呈绿色(G),Fv/Fm为0.70~0.75;Ⅱ级亚健康藻体,藻体呈黄绿色(GY),Fv/Fm为0.60~0.69;Ⅲ级半健康藻体,藻体呈黄色(Y),Fv/Fm为0.41~0.59;Ⅳ级衰老藻体,藻体呈白色(W),Fv/Fm为0~0.40。对2011年青岛近岸海域的漂浮浒苔藻体状态等级进行测定和评价,发现各采样点藻体处于以下3个不同等级:Ⅱ级亚健康藻体,其Fv/Fm最高仅0.68,总叶绿素含量为(0.608±0.032)mg/g;Ⅲ级半健康藻体,其Fv/Fm最高为0.57,总叶绿素含量为(0.226±0.031)mg/g;Ⅳ级衰老藻体,其Fv/Fm最高仅为0.29,总叶绿素含量为(0.088±0.029)mg/g。其中,QD1、QD2、QD3主要以Ⅲ级(51.34%~71.37%)和Ⅳ级藻体(17.84%~28.08%)为主;而QD4、QD5、QD6主要以Ⅲ级藻体为主(95.13%以上)。表明漂入青岛海域绿潮藻浒苔大部分状态较差,不能健康存活。另发现浒苔藻体叶绿素含量高低与光合活性呈正相关(F=25.106,R=0.782,P<0.01),为探索两者耦合关系以及今后完善藻体状态评价体系提供依据。
The photosynthetic physiological characteristics of Ulva prolifera in the Yellow Sea and its assessment of status were studied in Qingdao Yellow Sea, which laid the foundation for early warning and prediction of growth potential of green sea tide in the Yellow Sea. Firstly, according to the difference of Fv / Fm, the algae were divided into 4 grades: Grade I healthy algae, green algae (G) and Fv / Fm 0.70-0.75; Ⅱ grade sub-health algae, algae yellow-green (GY), Fv / Fm 0.60 ~ 0.69; Ⅲ grade semi-healthy algae, algae yellow (Y), Fv / Fm 0.41 ~ 0.59; Algae, algae white (W), Fv / Fm is 0 ~ 0.40. The level of algae in the coastal area of Qingdao in 2011 was measured and evaluated. The results showed that the algae at different sampling sites were at three different levels: the sub-health algae of level Ⅱ had the highest Fv / Fm of only 0.68, (0.608 ± 0.032) mg / g. The level of Fv / Fm was the highest (0.57) and the total chlorophyll content was (0.226 ± 0.031) mg / Only 0.29, total chlorophyll content (0.088 ± 0.029) mg / g. Among them, QD1, QD2 and QD3 are mainly Grade III (51.34% -71.37%) and Grade IV (17.84% -28.08%), while QD4, QD5 and QD6 are mainly Grade III algae (95.13% the above). Indicating that most of the green tide algae that bleached into the sea of Qingdao were in poor condition and could not survive healthily. In addition, it was found that there was a positive correlation between chlorophyll content and photosynthetic activity (F = 25.106, R = 0.782, P <0.01), which provided a basis for exploring the coupling relationship between the two and improving the evaluation system of algal status in the future.