摘要
本文通过对辽东湾海蜇亲体数量与补充量,环境因子与海蜇相对数量之间关系的回归分析,认为径流量可能是影响辽东湾海蜇数量变动,特别是剧烈变动的主要因素。二者之间的关系可用抛物线拟合。根据8～10月的径流量,可以预测翌年辽东湾海蜇数量的变化趋势。
This paper deals with the studies on dynamics of the population of thejellyfish (Rhopilema esculenta Kishinouye) in the Liaodong Bay, Bohai Sea.The relative abundance.of one and naxt year-classes are used as indices of thead. stock and the recruitment respectively. The data are fit with Beverton'sand Ricker's reproductive models. But, there is not evident correiativity beingfound. t is shown that the abundance of one year-class during the years inwhich the data were obtained. Several environmental factors, such as river flow, strong winds werescreened with the computor. Defining that the river flow is main factorinfluencing the abundance of the jellyfish in that area. The relationshipbetween the relative abundance. of the stock (Y) and the river flow (X) canbe expressed as follow: y=3.025x--0.015x^2+31.372. Feasibility of drawing up the medial term prediction on abundance of thestock basing on the result mentioned above has been discussed.
出处
《水产科学》
CAS
北大核心
1990年第4期1-5,共5页
Fisheries Science
