single fishery 中文意思是什麼
single fishery
解釋
單一漁業-
This vessel is a fast fishery management ship made of steel, round bilge, single continuous deck, longitudinal framing, all - welded structure, double propellers and double rudders, c w certain weapon executing the fishery management and supervision along guangdong coasts. main engine model kta38 - m
本船主船體為鋼質，圓舭單層連續甲板縱骨架式焊接結構甲板室為中后機雙槳雙舵小型高速艇型的高速漁政海監管理公務船，用於廣東省沿海執行漁政海監管理任務，配備一定的武備。 -
Including actuality evaluation, environmental identification analysis, dynamic harmonious analysis, dynamic simulation analysis and policy decision putting into optimization scheme. the results showed as follows. 1, in the current agricultural production structure, output value of animal husbandry and crop planting occupy 93. 4 % of agricultural total output value, and forestry and fishery do not get fully reasonably develop ; the wild economic vegetables and fruits resources and water resources etc, are the superiority environment factors of agriculture development of this area, and the slope farmland and service system etc, are limited environment factors, and the science - technology and labor quality etc, are potential environment factors ; there exists some problems in the agricultural production system, for example, single productive constitution do n ' t correspond with varieties of resources, rich plant resources exploitation scarcity and economical crop development lag
本文選擇四川盆周山區這一特定地貌區域作為研究對象，以滎經縣為代表研究了該區農業生產結構的優化調整，包括農業生產系統的現有結構評價、環境辨識分析、動態協調分析、動態模擬評價分析和實施優化方案的決策建議，結果表明： 1 、滎經現有結構為以畜牧業和種植業並重的豬糧為主的農業生產結構，二者產值占農業總產值的93 . 4 ，林業、漁業未得到充分合理發展；野生經濟菜果資源、水資源等為該區農業發展的優勢環境因子，坡耕地、服務體系等為限制環境因子，科技、勞動力素質等為潛力環境因子；同時該區農業生產系統存在著生產結構的單一性與資源多樣性的利用不協調、豐富的植物資源開發不足、經濟作物發展滯后等問題。 -
3. in the paper, we consider gordon theory of a class of single - species ecological systems with periodic coefficients on open - access fishery, and set up the ordinary economic equilibrium conditions of the single - species and get globally asymptotically stable economic equilibrium ; the over - exploitation of the system and the modification on economic equilibrium conditions by opportunity cost are investigated
考慮了一類具周期系數的單種群生態系統的gordon理論，建立了單種群系統最為普遍的經濟均衡條件，從而找到了全局漸近穩定性的經濟均衡點；並對系統因捕獲造成的過度開發，以及對gordon經濟均衡條件的改進作了相應研究。
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