摘要
对我国21个省、市、自治区的200座大、中、小型水库的鱼产量与理化性状,生物资源和形态与气候三大指标体系中15个生态因子分别作了各指标体系和综合指标体系的相关和回归分析。综合指标体系的逐步回归分析表明,在人工投放鱼种为主的养鱼水库,总磷、初级生产力和鱼种投放量与鱼产量相关密切,复相关系数R=0.6304。
In this paper, fish yield and 15 ecological factors including morphoclimate, physical-chemical quality, biological resoures and synthetic index system from 200 reservoirs of different dimension in China are analysed by using statistic method. Stepwise regression analysis for the synthetic index system shows that fish yield is closely related to total phosphorus, primary productivity and quantity of stocked juvenile fish in reservoir. Multiple correlative coefficient is 0.6304.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1993年第3期278-284,共7页
Journal of Huazhong Agricultural University
关键词
水库养鱼
鱼类
产量
ecological factor, regression model, index system, fish yield, reservoir
