水产学报2011，Vol.35Issue(1)：88-95,8.DOI:10.3724/SP.J.1231.2011.17131
双齿围沙蚕对围塘养殖沉积物氮磷含量的影响
Removing POM of sediment by Perinereis aibuhitensis Grube in earth pond
摘要
Abstract
Rapid development of mariculture supplied the demand of quality protein for human,meanwhile,also resulted in environmental degradation and ecological imbalance.For this reason, lots of maricultureecological models for improving cultured environment were suggested.Among them, seaweeds/macroalgae were introduced into the system and produced environmental effects.However,macroalgal effect was only restricted in water column, with no effect to improve quality of sediment.This article investigated three-dimensional effects of improving environmental quality by introducing benthos and seaweed into the system.Different stocking densities of benthos (Perinereis aibuhitensis)were introduced into the cultured systems that only had fish (F) or fish + seaweed ( Gracilaria lichenoides) to investigate the effect of benthos on removing POM of sediment and the most optimal density of benthos to build an integrated mariculture system (IMCS).The results showed that the benthos made remarkable effect of reducing POM in sediments.Compared with the system that only has fish (F model), the contents of nitrogen (N)and phosphorus (P)in sediments decreased by 9.59％ -10.47％ and 7.11％ -8.18％ ,respectively in the models of FP( fish +benthos) and FGP( fish + seaweed + benthos).And the stocking density of benthos had a significant impact on the removal of POM in the sediment.The models with the densities of 22.5 kg/hm2 and 30 kg/hm2 had better environmental benefits than the one with 15 kg/hm2, and there were no differences between the two high densities models.Considering this two treatments' remediation effects and culture benefits, 22.5 kg/hm2 of benthos' density can promote the culture benefit and improve the sediment environment.关键词
双齿围沙蚕/放养密度/围塘养殖/沉积物/修复Key words
Perinereis aibuhitensis/ optimum density/ land-base culture/ sediment/ remediation分类
生物科学引用本文复制引用
徐永健,卢光明,葛奇伟..双齿围沙蚕对围塘养殖沉积物氮磷含量的影响[J].水产学报,2011,35(1):88-95,8.基金项目
国家908专项(908-02-04-07) （908-02-04-07）
宁波大学校学科项目(xk0613050) （xk0613050）
