鄱阳湖子湖“堑秋湖”渔业资源结构特征分析

发布时间：2018-01-01 20:26

本文关键词：鄱阳湖子湖“堑秋湖”渔业资源结构特征分析　出处：《长江流域资源与环境》2015年06期 　论文类型：期刊论文

【摘要】："堑秋湖"是广泛存在于鄱阳湖湖区且与鄱阳湖水文节律特征相顺应的一种渔业方式。为了解"堑秋湖"渔获物组成特征及其产量与水位之间的关系,于2011~2013年"堑秋湖"期间对江西鄱阳湖国家级自然保护区的子湖大湖池和沙湖进行了连续3年的渔业调查。2011年,大湖池和沙湖与修河分别相通23d和10d,鄱阳湖属旱涝急转气候;2012年鄱阳湖水势较大,大湖池和沙湖与修河分别相通124d和108d。2013年鄱阳湖再现旱情,大湖池和沙湖均未能与修河连通。2011年渔业调查开展7次,2012年调查9次,2013年调查5次。3a调查累计获得鱼类59种隶属于6目12科43属。3年研究结果表明渔获物以鲤科鱼类为主,在种类上变化不大但优势物种有所改变且渔获物产量呈下降趋势,无度量多维排序结果(MSD)显示鱼类群落在不同年度和子湖间分离明显。经济鱼类的单位捕捞努力量(CPUE)与水位变化的线性回归分析结果表明,2011年经济鱼类产量与当日水位呈正相关性,但2012年和2013年两者的相关性却不明显。
[Abstract]:"Their autumn lake" is a widespread way in the Poyang Lake lake fishery and rhythm characteristics and Poyang Lake Hydrologic Adaptation. In order to understand the "Autumn Lake graben" catch composition characteristics and relationship between yield and water level in 2011~2013 years, "Qian Qiu Hu" during the Jiangxi Poyang Lake national nature reserve the Great Lakes Lake pool and Shahu for 3 consecutive years of fishery survey.2011, the Great Lakes and Shahu River and pool repair respectively 23d and 10d, Poyang Lake is a sharp drought climate; 2012 Poyang Lake water is the Great Lakes and Shahu river pool and repair 124d and 108d.2013 respectively in Poyang Lake and Shahu represent the drought, the great lakes were unable to pool and Xiu River connectivity investigation of fishery carried out in.2011 7 times, 9 times the 2012 survey, the survey in 2013 5.3a surveys to obtain a total of 59 fish species belonging to 6 orders, 12 families and 43 genera in.3 the results of the study show that catches Cyprinidae is the main, in kind Little change but the dominant species changed and catches the yield decreased, non metric multidimensional ranking results (MSD) showed that the fish community were separated in different year and sub lake. Economic fish catch per unit effort (CPUE) and linear regression analysis of the change of water level. The results show that in 2011 the economic output of the fish and the day the water level was positively correlated, but the correlation between 2012 and 2013 is not obvious.

【作者单位】：南昌大学生命科学研究院流域生态学研究所与鄱阳湖湖泊生态与生物资源利用教育部重点实验室;江西鄱阳湖湿地生态系统国家定位观测研究站;复旦大学生物多样性科学研究所与生态工程教育部重点实验室;
【基金】：国家自然科学基金项目(31260107)
【分类号】：S932.4
【正文快照】： 2.复旦大学生物多样性科学研究所与生态工程教育部重点实验室,上海200433;3.江西鄱阳湖湿地生态系统国家定位观测研究站,江西南昌330038)鄱阳湖是中国重要的淡水渔业资源产区,是长江中下游天然的鱼类资源库、鱼类基因库和经济鱼类的原种基地[1],对鱼类资源保护和种群维持具有

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