發(fā)布時間：2018-01-02 11:36

  本文關(guān)鍵詞：北太平洋公海日本鯖資源分布及其漁場環(huán)境特征　出處：《海洋漁業(yè)》2017年04期 　論文類型：期刊論文

  更多相關(guān)文章： 鮐魚 海洋環(huán)境 GAM模型 北太平洋

【摘要】：根據(jù)2014~2015年兩年收集的北太平洋公海圍拖網(wǎng)作業(yè)的日本鯖(Scomber japonicas,又稱鮐魚)生產(chǎn)月度數(shù)據(jù),結(jié)合同期衛(wèi)星遙感反演技術(shù)獲取的海表溫度(SST)、海水葉綠素a(Chl-a)濃度、海流等環(huán)境數(shù)據(jù),運用漁獲量重心法,地統(tǒng)計插值等方法,分析了北太平洋公海鮐魚的資源分布情況與漁獲量重心的時空變化及其與主要環(huán)境因子之間的關(guān)系。研究表明,鮐魚漁場季節(jié)性差異明顯,漁場重心集中分布在39°N~43°N、147°E~154°E范圍內(nèi)。兩年漁場重心均呈現(xiàn)先向東北方向移動,自9月開始再向西南方向移動的趨勢。GAM模型顯示,北太平洋鮐魚漁場的最適海表溫度范圍是16~18℃,最適葉綠素a濃度范圍是0.3~0.8 mg·m~(-3),空間上集中分布在40°N~41°N、148°E~151°E,海流對鮐魚漁場形成尤為重要。
[Abstract]:Monthly data on the production of Scomber japonicas (Scomber japonicas) in high seas trawling operations in the North Pacific Ocean were collected from 2014 to 2015. The environmental data such as sea surface temperature (SST), sea water chlorophyll a Chl-a (Chl-a), current and so on were obtained by using satellite remote sensing inversion technique in the same period. The methods of catch center of gravity and geostatistical interpolation were used. The relationship between the distribution of mackerel resources in the high seas of the North Pacific Ocean and the center of catch of mackerel and its relationship with the main environmental factors was analyzed. The center of gravity of the fishing ground is concentrated in the range of 39 擄Nao 43 擄N, 147 擄E, 154 擄E. the gravity center of the fishing ground moves first to the northeast for two years. The GAM model shows that the optimum sea surface temperature range of mackerel fishing ground in the North Pacific is 16 ~ 18 鈩，

本文編號：1369023