本文選題：魚類 + 密度　； 參考：《水產(chǎn)學(xué)報(bào)》2014年09期

【摘要】：為研究浙江近岸河口海域魚類資源分布的時(shí)空變化特征,利用2010年4月(春季)和10月(秋季)魚山漁場臺(tái)州灣海域底拖網(wǎng)游泳動(dòng)物資源調(diào)查資料,分析了臺(tái)州灣魚類資源量的時(shí)空分布特征和優(yōu)勢種、溫度、鹽度、水深等因素對(duì)魚類資源量和分布的影響。結(jié)果發(fā)現(xiàn),魚類尾數(shù)密度和質(zhì)量密度變化趨勢一致,秋季魚類質(zhì)量密度和尾數(shù)密度均遠(yuǎn)遠(yuǎn)高于春季;春季調(diào)查海域魚類密度北部高于南部,秋季截然相反。回歸分析顯示,兩季優(yōu)勢種對(duì)魚類資源量變化均有密切關(guān)系,其中,龍頭魚對(duì)魚類資源量的貢獻(xiàn)率明顯高于其他物種,兩季均為第一優(yōu)勢種。調(diào)查海域底層溫度與魚類質(zhì)量密度和尾數(shù)密度均呈顯著的正相關(guān)關(guān)系(PW=0.001,PN=0.009),水深與資源量相關(guān)關(guān)系不顯著(Pw=0.067,PN=0.051),春季20 m以內(nèi)水深魚類資源量較高,而秋季密度高值區(qū)水深均大于20 m。研究表明,臺(tái)州灣海域春秋季魚類資源密度季節(jié)變化明顯,空間差異顯著,底層水溫是主要影響因素。
[Abstract]:In order to study the temporal and spatial variation of fish resources distribution in the estuarine area of Zhejiang Province, the survey data of bottom trawling animals in Taizhou Bay in April (spring) and October (autumn) 2010 were used. The effects of time and space distribution characteristics, dominant species, temperature, salinity and water depth on fish resources in Taizhou Bay were analyzed. The results showed that the trend of fish Mantissa density and mass density were the same, the fish mass density and Mantissa density in autumn were much higher than those in spring, and the density of fish in the north was higher than that in the south in spring, and the opposite was observed in autumn. Regression analysis showed that the dominant species were closely related to the changes of fish resources, and the contribution rate of faucet to fish resources was significantly higher than that of other species, and both seasons were the first dominant species. There was a significant positive correlation between bottom temperature and fish mass density and Mantissa density (PWN 0.001), but no significant correlation between water depth and resource quantity (Pwl0. 067 PNN 0. 051). The water depth of fish within 20 m in spring was higher than 20 m, but the water depth in high density area in autumn was more than 20 m. The results showed that the density of fish resources in Taizhou Bay changed obviously in spring and autumn, and the spatial difference was significant. The bottom water temperature was the main influencing factor.
【作者單位】： 中國水產(chǎn)科學(xué)研究院東海水產(chǎn)研究所;
【基金】：國家“九七三”重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2010CB428705) 海洋公益性行業(yè)科研專項(xiàng)(201305027-8)
【分類號(hào)】：S931.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王曉玲;孫孝維;;吉林西部魚類資源調(diào)查研究[J];白城師范學(xué)院學(xué)報(bào);2006年06期

2 韓九皋;;衡水湖魚類資源調(diào)查[J];水利漁業(yè);2007年06期

3 張紅燕;賀艷輝;龔峗，

本文編號(hào)：2051041