| 雅砻江下游鱼类资源调查及保护措施 |
| Status of Fish Resources and Protection Measures in the Lower Reaches of Yalong River |
| 投稿时间：2010-11-04 修订日期：2011-04-15 |
| DOI： |
| 中文关键词:雅砻江 下游 鱼类资源 调查 |
| 英文关键词:Ya-long River Lower reaches Fish resources Investigation |
| 基金项目:国家自然科学基金“雅砻江水电开发联合研究基金”重点项目（ＮＯ．５０６３９０７０）。 |
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| 中文摘要: |
| 分别于2007年4-5月和2008年4-5月对雅砻江下游鱼类资源现状进行了调查,共设置采样点9个,采集鱼类54种,另收集鱼类21种,共隶属于7目19科。调查结果表明,雅砻江下游水域生态环境的变化导致鱼类物种组成、种群结构发生了变化,珍稀鱼类数量急剧减少。与历史资料相比,鱼类种类数量从98种下降到75种。另外,渔获物分析结果表明,雅砻江下游鱼类资源呈现低龄化、小型化的趋势。雅砻江下游珍稀保护鱼类长薄鳅、细鳞裂腹鱼、鲈鲤和四川华吸鳅在调查区域内的分布范围有显著差异。 |
| 英文摘要: |
| Two investigations concerning the status of fishery resource were conducted during April and May in 2007and 2008，nine sampling sites were selected in lower reaches of Yalong River. The results showed that the fish community consisted of 75 species belonged to 7 orders，19 families. Moreover，the fish community composition and structure were dramatically changed caused by water environmental change，and the population of rare fishes reduced sharply. Compared with the historical data，the species number of fish decreased from 98 to 75. In addition，the analysis of main catches indicated that fish resources in the lower reaches of Yalong River showed the trend of younger age and smaller size. The spatial distribution of rare or protected fishes including Leptobotia elongate，Schizothorax chongi，Percocypris pingi and Sinogastromyzon szechuanensis were significantly different in the studied area。 |
| 杨青瑞,陈求稳,马徐发.2011.雅砻江下游鱼类资源调查及保护措施[J].水生态学杂志,32(3):94-98. |
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