摘要
１９８０～１９９６年对大伙房水库６个站进行了不同季节底栖动物群落特征的生态调查。共发现３４种底栖动物，隶属于２５属，４科。底栖动物密度由１９８０年的３３３５个／ｍ２减少到１９９６年的８９７个／ｍ２。共发现１４种耐污种类，占总数的４１．２％，密度占８６．５％以上。水质生物学评价结果表明：３站动物种类少（１０种），多样性指数低（１．２５９６），属α－中污染，４站动物种类多（１９种），多样性指数为１．３４５８，属β－中污染。大伙房水库只受到轻中度污染。
Investigations of benthic community structure were carried out in different seasons at 6 points in Dahuofang Reservoir during 1980￣1996. Thirty four species of benthos observed belong to 25 genera from 4 families. The density of the benthos decreased from 3335 individuals/m 2 in 1980 to 897 individuals/m 2 in 1996. Fourteen pollution resist species were found, accounting for 51.9% of the total species number, and over 86.5% of the density. It was found by bioassessment of the water quality that there was a few benthic animal species (10), and low diversity index (1.2956) at Station No.3 , which was α middle grade pollution. At Station No. 4, however, there were more species of benthic animals (19), high diversity index (1.8458) and β middle grade pollution. It appears that Dahuofang Reservoir is becoming slightly polluted.
出处
《大连水产学院学报》
CSCD
1998年第1期47-53,共7页
Journal of Dalian Fisheries University
关键词
底栖动物
演替
评价
水库
污染
benthic animals
succession
assessment
reservoir
