| 瓯江干流丽水段渔业资源现状评估与修复研究 |
| TFishery Resources Present Situation Assessment and Study on Repair Measure in Lishui District of Oujiang River Main Stream Area |
| 投稿时间：2010-03-24 修订日期：2010-05-16 |
| DOI： |
| 中文关键词:渔业资源 修复 致危原因 瓯江干流丽水段 |
| 英文关键词:Fishery resources Restoration measure Endangering factors Lishui district of Oujiang River |
| 基金项目:浙江省厅市会商项目（２００７５５４）资助。 |
|
| 摘要点击次数: 2837 |
| 全文下载次数: 2848 |
| 中文摘要: |
| 根据２００９年瓯江干流丽水段的渔业资源调查，运用数学统计法对渔业资源现状进行析，探讨其变化的主要原因，同时提出了渔业资源修复措施。结果表明，丽水段浮游生物的种类、细胞密度和生物量相对于１９７２年均有一定程度的增加，且组成发生了一定的变化；底栖动物种类、密度和生物量均有减少，水丝蚓所占比例增大；鱼类的种类、数量和可捕量较１９７２年大幅降低，珍稀鱼类种类减少甚至濒临灭绝，许多鱼类出现低龄化和小型化问题。水工设施的大量建造、环境污染和过度采砂被认为是造成上述变化的主要原因。提出了通过建立溪流性鱼类保护区、设立增殖放流站和繁育基地、减少环境污染等多种措施来实现瓯江丽水段渔业资源的修复。 |
| 英文摘要: |
| Analysis of present fish resources in Lishui district of Oujiang River main stream area had been carried out with mathematics method based on the data investigated during 2009. Factors that lead fishery resources to crisis and ecological restoration measures had also been discussed. The result showed that kinds，density and biomass of present planktons was increased and the component had changed compared with 1972. The kinds，biomass and density of benthos and fish were decreased. Since 1972，the fishes in Oujiang River experienced the marked variations in their composition and resources，including the decrease of the diversity，the endangering and even the extinction of rare fishes，and the low-aging and miniaturization of fish catching. The changes were due to hydraulic engineering，industrial and agricultural effluent and over sand mining. Establishing nature reserve and fish-hatchery，reducing pollution and restoring fish passage were recognized to be helpful to fish restoration.
|
| 原居林,练青平,王凯伟,姚子亮,陆 君,张爱菊,宓国强.2010.瓯江干流丽水段渔业资源现状评估与修复研究[J].水生态学杂志,31(5):122-126. |
| 查看全文 查看/发表评论 下载PDF阅读器 HTML |
