摘要
2008年4～7月对长江铜锣峡江段航道炸礁施工区域的水体主要理化指标、浮游生物、底栖动物、渔获物、鱼类卵苗发生量进行了监测,并以鲢鱼卵为材料研究了水下爆破对鱼卵的损害。结果表明,炸礁施工对水体主要理化指标、浮游生物种类和数量的影响不明显,但导致了底栖动物的严重损失。药量为120kg的35%硝化甘油炸药,钻孔深度1.0～1.5m的水下爆破,使距爆点300m内的鲢鱼卵破损或不能孵化。炸礁施工期铜锣峡江段渔获量比往年同期减少了约80%。
In order to analysis the affections of reef blast to fishery resources,the main physical and chemical factors,the plankton and benthos,the fish catches and the amount of fish eggs in the Tongluoxia Gorge of the Changjiang River were surveyed when the reef blast was conducted from May to July,2008.A study about the damage of underwater blast to the eggs of Hypophthalmichthys molitrix was also conducted.The results revealed that the main physical and chemical factors of water and the plankton were not obvious...
出处
《水生态学杂志》
北大核心
2010年第4期75-80,共6页
Journal of Hydroecology
关键词
长江
铜锣峡
炸礁
渔业资源
Changjiang River
Tongluoxia Gorge
Reef blast
Fishery resources
