頁籤選單縮合
題名 | 屏東縣近海鮪釣漁業最適經濟漁獲分析= |
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作者 | 王健雄; 朱志勇; 何明潭; 李存富; 葉裕民; 杜維融; |
期刊 | 臺灣海洋學刊 |
出版日期 | 19950100 |
卷期 | 34:1 1995.01[民84.01] |
頁次 | 頁57-71 |
分類號 | 439.23 |
語文 | chi |
關鍵詞 | 近海鮪釣漁業; 最適經濟漁獲; Inshore tuna longline fishery; Maximum economic yield; |
中文摘要 | 以東港為基地的近海鮪釣漁業在漁具、漁法、漁期及作業漁場方面,近年來並無 明顯的改變,漁獲組成比的變動也不大,仍然以黃鰭鮪為主要漁獲對象。漁獲物的平均價格 自1981年後即一直維持在每公斤80-120元之間,1991年的平均魚價為每公斤88.82元。該年 的平均單位漁獲努力量的成本大約為每船噸17萬元。最大持續生產量為27,715公噸時,最適 努力量為23,992船噸。最適經濟漁獲量約為27,525公噸,此時之努力量為22,002船噸。1991 年之實際漁獲量為28,931公噸,努力量為29,313船噸,已略高於最適水準。估計1991年的淨 所得約為每船噸70,638元。若努力量維持在最大經濟漁獲時,則淨所得可望達到94,094元。 近年來,魚價的降低及漁撈成本的增加,導致漁業經營的困難,也因而導致漁業結構的重大 變化,五十噸以下船隻的急劇減少,二十噸以下漁船已甚少參予本漁業,以及相當大部份的 漁船不斷的外移,以尋求廉價的勞力以及設法降低營運成本。 |
英文摘要 | Recently, no significant change in fishing gears, fishing seasons and fishing grounds was found for Taiwan's inshore tuna longline fishery. Fish prices varied in the range of 80-120 NT dollars. In 1991, the average fish price is about 88.82 NT dollars per kilogram and the average cost is about 170 thousand NT dollars per GRT. The maximum sustainable yield is estimated by 27,715 metric tons with the optimal efforts of 23,992 gross tons. The maximum economic yield is about 27.525 metric tons with the optimal efforts of 22,002 gross tons. The actual efforts in 1991 is 29,313 gross tons. The actual catch in 1991 is 28,931 metric tons. In 1991, the net revenue is about 70,638 NT dollars per gross tons. It is lower than 94,089 NT dollars per gross tons if the fishing efforts maintained in the level of the maximum economic yield. From 1988, some larger fishing boats have shifted to foreign base ports and many boats less than 10 gross tons ceased to operate in the inshore tuna longline fishing grounds. The reasons may be due to low fish price and high cost. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。