摘要
根据密云水库 1996～ 1998年浮游生物、底栖生物的生物量、组成和季节变化 ,对其所能提供的滤食性鱼类的鱼产力进行了粗略的估算。调查结果表明 :浮游植物生物量各站点平均值为 1.0 5mg/L ,最高峰出现在 6月和 8月 ,优势类群为硅藻门和绿藻门 ;浮游动物生物量各站点平均值为 1.87mg/L ,最高峰出现在 7～ 9月 ,优势类群为桡足类 ;底栖生物数量和生物量各站点平均值分别为 :数量 2 4 78.0 5m- 2 ,生物量 19.76g/m2 ,最高峰出现在 12月 ,优势类群为水蚯蚓 (数量 )和软体动物 (生物量 )。以浮游生物量粗略估算滤食性鱼类鱼产力为 2× 10 6 kg。
Miyun Reservoir is located to the east of Beijing with a water area of 188 km 2 and water vulume of 43.75 billion m 3. An investigation was conducted from 1996 to 1998. The triennial average biomass of phytoplankton was 1.05 mg/L, and its peak appeared in June and August. Bacillariophyta and Chlorophyta predominated during the 3 years; the triennial average biomass of zooplankton was 1.87 mg/L and the peak was in June, August and September, and the predominating species was Copepoda; the triennial average numbers and biomass of zoobenthos were 2 478.05 m -2 and 19.76 g/m 2,respectively, and the peak was in December. The potential fish productivity was estimated approximatly 2×10 6 kg on the basis of the biomass of plankton.
出处
《中国水产科学》
CAS
CSCD
北大核心
2001年第1期53-58,81,共7页
Journal of Fishery Sciences of China
基金
北京市科委项目!( 95 15 0 190 0 0 )
关键词
密云水库
水生生物
生物量
鲢
鳙
鱼产力
滤食性鱼类
Miyun Reservoir
hydrobiology
biomass
potential productivity of silver carp and bighead carp
