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本文通过1986～1988年对滆湖几种渔具(特别是簖)的渔获物进行的统计,对鲫、红鳍鲌、乌鳢等鱼类的生物学特性的研究,分析了滆湖鱼类的群落和种群结构中存在的小型化现象?峁砻?群落结构中以小型、低值鱼类和种群结构中低龄鱼占有较大的比例。用Bertalanffy生长方程和Beverton-Holt,动态综合模式分析了鲫种群数量变动,据此提出了合适的捕捞强度和起捕规格。本文还从湖泊渔业生态系统角度,探讨了造成滆湖天然鱼类小型化的原因及其相应的对策。
Based on the statistics of the catches of several kinds of fishing tackle (especially catfish) from 1986 to 1988, the paper studied the biological characteristics of the fish such as crucian carp, red fins and catfish, Population and population structure of the miniaturization phenomenon? 峁 砻? Community structure to small, low-value fish and population structure of young fish occupy a large proportion. Using Bertalanffy growth equation and Beverton-Holt, the dynamic integrated model was used to analyze the population variation of crucian carp, and the appropriate fishing intensity and catching and fishing specifications were proposed. This paper also discusses the reasons for the miniaturization of natural lakes in Lihu Lake and the corresponding countermeasures from the perspective of lakes and fishery ecosystems.