| 东太湖网围养蟹效应及养殖模式优化 |
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| 引用本文： | 何俊,谷孝鸿,刘国锋.东太湖网围养蟹效应及养殖模式优化[J].湖泊科学,2009,21(4):523-529. |
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| 作者姓名： | 何俊 谷孝鸿 刘国锋 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京,210008;中国科学院研究生院,北京,100049
2. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京,210008 |
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| 基金项目： | 中国科学院农业创新基地项目"水湖泊环保型渔业资源可持续利用及示范"和江苏省太湖渔业管理委员会重点项目"太湖生物资源结构与有效保护利用研究"联合资助 |
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| 摘 要： | 通过2007年3月至12月对东太湖三个不同养殖密度和规模网围养蟹区养殖状况与环境的比较研究,分析不同养殖方式所带来的经济效益以及对湖泊环境的影响.结果表明:东太湖人工投饵单养河蟹的养殖方式,会造成水体氮磷营养盐累积,对水体造成污染.选取的A、B、C三个养殖区每产出1kg河蟹造成湖区氮累积量分别为0.24kg、0.33kg和0.30kg;磷累积量为0.043kg、0.059kg和0.051kg.比较各养殖区环境状况、经济效益以及河蟹生长规格,认为东太湖实施河蟹优化养殖的适宜密度和单个网围面积为6000只/hm2和2.33hm2左右,但是目前东太湖养殖方式仍需要改进.针对东太湖养殖面积过大和布局不合理现状,认为东太湖网围养蟹面积应控制在3165.2hm2以下为宜.
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| 关 键 词： | 东太湖 网围养蟹 效应 优化模式 |
| 收稿时间： | 2008/7/17 0:00:00 |
| 修稿时间： | 2008/10/22 0:00:00 |
Effect and optimization model of enclosure crab culture in East Lake Taihu |
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| HE Jun,GU Xiaohong and LIU Guofeng.Effect and optimization model of enclosure crab culture in East Lake Taihu[J].Journal of Lake Science,2009,21(4):523-529. |
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| Authors: | HE Jun GU Xiaohong and LIU Guofeng |
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| Institution: | 1: State Key Laboratory of Lake Science and Environment;Nanjing Institute of Geography and Limnology;Chinese Academy of Sciences;Nanjing 210008;P.R.China;2: Graduate University of Chinese Academy of Sciences;Beijing 100049;P.R.China |
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| Abstract: | Based on the comparative studies between the enclosure culture situations of different density and scale of water environments investigated during period from March and December 2007 in East Lake Taihu, the paper analyzed the economical benefit and environmental effect under different culture models. The results showed that culture models of bait casting and monoculture in East Lake Taihu, no matter which kinds of density and scale there were, would make the output of nitrogen and phosphorus nutrients less ... |
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| Keywords: | East Lake Taihu enclosure crab culture effect optimization model |
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