catch per unit of effort 中文意思是什麼

catch per unit of effort 解釋
單位努力漁獲量
  • catch : vt （caught; caught）1 捕捉；逮著，捕獲，攔截；用網捕（鳥等）；迷惑住。2 看到，看穿，看出，發覺。...
  • per :
  • unit : n 1 個體，一個，一人。2 （計值、組織、機構）單位；單元；小組，分部；【軍事】部隊；分隊。3 【機械...
  • of : OF ＝Old French 古法語。
  • effort : n. 1. 努力，嘗試，盡力。2. 成就，努力的成果；傑作。3. 〈英國〉（募捐等的）運動。4. 【機械工程】作用力。5. 工作；工作研究計劃。
  1. ( 2 ) the fishing gears in hejiang section were divided into drift trammel net, set longline and jig according to the fishery status in hejiang section. " number of fishing boat day " was selected as the unit of fishing effort. the annual catch of the four kinds of fishing gears was get from multiplying catch per unit effort ( cpue ) by fishing effort

    （ 2 ）根據合江江段的漁業現狀，將該江段的漁具分為三層流刺網、餌釣、滾鉤和其它偶見漁具四類，以「船?天」作為捕撈努力量的單位，用單位捕撈努力量漁獲量（ cpue ）乘以年捕撈努力量分別得到這四類漁具的年漁獲量，並將這四類漁具的年漁獲量相加估算出合江江段1999 - 2002年的漁獲量分別為104563 . 464kg 、 65564 . 231kg 、 123684 . 966kg和107285 . 272kg 。
  2. With the aim to study the fishing variations between the single - trap set net and the double - trap set net, catch per unit effort ( cpue ) and seasonal index derived from monthly landings at two fixed shore - nets along the coast of tang - ao in northeastern taiwan were examined for the last 10 years from 1975 to 1984

    摘要為究明改良型定置網（雙落網）與傳統型定置網（單落網）之漁獲效率及漁期差異性，乃以東澳新協發定置漁場網型改良前後各5年之魚種別歷月漁獲統計資料加以檢測解析，結果如次： （ 1 ）網型改良后的總平均單位努力漁獲量較改良前成長3倍有餘。
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