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Environmental pressure of active fishing method: A study on carbon emission by trawlers from north-west Indian coast
Marine Policy ( IF 4.315 ) Pub Date : 2021-02-27 , DOI: 10.1016/j.marpol.2021.104453
Manoharmayum Shaya Devi , K.A. Martin Xavier , Asem Sanjit Singh , Leela Edwin , Veerendra Veer Singh , Latha Shenoy

Carbon footprint of fishing activities is an utmost important study at present for mitigation of climate change. It is a simplified form of life cycle assessment (LCA) which measured total amount of carbon dioxide emissions. Assessment of emission and energy utilization in fishing were neglected earlier and very minimal information are available in Indian context. The present study analyzed the fuel consumption, energy utilized and carbon emission rate of trawlers from north-west coast of India. Efficiency of different categories of trawlers i.e., single-day (SD), multi-day small (MDS), multi-day medium (MDM) and multi-day large (MDL) trawlers was estimated. SD trawlers were found to be most efficient followed by MDM, MDL and MDS. Single-day fishing was significantly different from multi-day fishing in terms of fuel efficiency, energy intensity and carbon emission rate. A total of 1769 trawlers were operated from Versova (site I), SSD (Sassoon Dock) (site II) and NFW (New Ferry Wharf) (site III). Of these, more than 50% are MDL trawlers and 76% of the total fuel consumed by MDL trawlers. Trawlers of selected sites resulted into total diesel consumption of 119 million litres per year. The carbon emission due to combustion of diesel was 0.3 million tonnes which is 1/12th of total carbon emission by Indian fishing fleet. Considering the impacts of trawlers on environment, substantial phasing out of MDS trawlers and multi-day trawlers with high installed engine horsepower is necessary. The trawling operation in north-west coast of India needs a strict regulation in terms of number and engine horsepower.



中文翻译:

主动捕捞方法的环境压力:印度西北海岸拖网渔船的碳排放研究

捕捞活动的碳足迹是目前减轻气候变化的一项最重要的研究。它是生命周期评估(LCA)的简化形式,它测量了二氧化碳的排放总量。以前忽略了捕捞中排放和能源利用的评估,在印度情况下,获得的信息很少。本研究分析了印度西北海岸拖网渔船的燃料消耗,能源利用和碳排放率。估计了不同类别拖网渔船的效率,即单日(SD),多日小型(MDS),多日中型(MDM)和多日大型(MDL)拖网。发现SD拖网是最有效的,其次是MDM,MDL和MDS。就燃料效率而言,单日捕鱼与多日捕鱼明显不同,能量强度和碳排放率。总共从Versova(站点I),SSD(沙宣码头)(站点II)和NFW(新渡轮码头)(站点III)操作了1拖网渔船。其中,超过50%是MDL拖网渔船,占MDL拖网渔船总燃料消耗的76%。选定地点的拖网渔船每年导致的柴油总消耗为1.19亿升。柴油燃烧产生的碳排放量为30万吨,是印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要逐步淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。总共从Versova(站点I),SSD(沙宣码头)(站点II)和NFW(新渡轮码头)(站点III)操作了1拖网渔船。其中,超过50%是MDL拖网渔船,占MDL拖网渔船总燃料消耗的76%。选定地点的拖网渔船每年导致的柴油总消耗为1.19亿升。柴油燃烧产生的碳排放量为30万吨,是印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要大量淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。总共从Versova(站点I),SSD(沙宣码头)(站点II)和NFW(新渡轮码头)(站点III)操作了1拖网渔船。其中,超过50%是MDL拖网渔船,占MDL拖网渔船总燃料消耗的76%。选定地点的拖网渔船每年导致的柴油总消耗为1.19亿升。柴油燃烧产生的碳排放量为30万吨,是印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要逐步淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。超过50%是MDL拖网渔船,占MDL拖网渔船总燃料消耗的76%。选定地点的拖网渔船每年导致的柴油总消耗为1.19亿升。柴油燃烧产生的碳排放量为30万吨,占印度渔船总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要逐步淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。超过50%是MDL拖网渔船,占MDL拖网渔船总燃料消耗的76%。选定地点的拖网渔船每年导致的柴油总消耗为1.19亿升。柴油燃烧产生的碳排放量为30万吨,是印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要逐步淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。300万吨,占印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要逐步淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。300万吨,占印度捕捞船队总碳排放量的1/12。考虑到拖网渔船对环境的影响,有必要大量淘汰具有较高发动机功率的MDS拖网渔船和多日拖网渔船。在印度西北海岸的拖网作业需要在数量和发动机功率方面进行严格的规定。

更新日期:2021-02-28
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