| 航道炸礁对长江铜锣峡江段渔业资源影响初步研究 |
| Primary Study on the Influence of Reef Blast to the Fishery Resources in the Tongluoxia Gorge of the Changjiang River |
| 投稿时间：2010-03-29 修订日期：2010-05-17 |
| DOI： |
| 中文关键词:长江，铜锣峡，炸礁，渔业资源 |
| 英文关键词:Changjiang River, Tongluoxia Gorge, Reef blast, Fishery resources |
| 基金项目: |
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| 中文摘要: |
| 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％。 |
| 英文摘要: |
| 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 Tongluoxia Gorge of 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 obviously influenced by the reef blast. In Tongluoxia Gorge，the average density of the benthos was 14 ind. /m2 , and the average biomass was 4. 62 g/m2 on the reef, the benthos were wrecked by reef blast. An under water blast of 120 kg nitroglycerin in borehole of 1-2m depth，resulted in the breakage of all fish eggs within 100 m，and the abortion of all fish eggs within 200-300m. The fish catches in Tongluoxia Gorge during the reef blast reduced 80% than that of the corresponding period of last years.
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| 韩雪慧,刘建虎,郑永华,苏胜齐,黄 奕,姚维志.2010.航道炸礁对长江铜锣峡江段渔业资源影响初步研究[J].水生态学杂志,31(4):75-80. |
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